(372)

John H. Ko, DDS

Cosmetic Dentistry

John H. Ko, DDS (Cosmetic Dentistry) is based out of Pleasanton, CA. John H. Ko, DDS values your feedback and has received 372 reviews with an average rating of 5.0 from patients. Click on the Post Review button to share your comments.

Scheduling is easy.  Staff is friendly. Never had an issue with service provided!
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Maria has been my family's dental hygienist for years, and we hope to keep seeing her. She does a thorough, careful job with my teeth and is always super friendly. I would absolutely recommend her ...
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Maria is the best hygienist I’ve ever visited. Total pro. She makes me look forward to dentist visits.
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No complaints!
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Everyone in Dr. Ko’s office is polite, professional & personable. They always make me feel like I’m the most important patient they have. Ester greets me with a smile & has all the logistic...
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Very helpful w new insurance transition and getting an appointment for much extensive work needed. Explanations were awesome. Dr. Ko is humble and gentle and makes everyone feel well taken care of ...
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Dr. Ko and his staff are wonderful and I am so happy I was referred to them for our family.  They are professional, extremely helpful and friendly and always make us feel like family during ou...
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My first time visit and they are already treating you like a family. Dr. Ko and his staffs are very friendly and amazing.
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Very friendly and helpful staff.  Was able to schedule a next-day appointment at a convenient time.  Very informative meeting with Dr. Ko about my teeth and needs; he took the time to exp...
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Always the best!
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I'm always looking forward to seeing all DrKo staff.I receive polite quality encouragement to care for my oral health Thanks to all Mr Jay Bowman.
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This place gets 5 stars! I had neglected going to the dentist for years because I really don't like the dentist. Recently, a friend of mine referred Dr. Ko to me and only said great things about hi...
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I was able to book an appointment online and the next day received a call from Esther assisting me with any questions.Dr. Ko and team were able to accommodate me urgently and address my needs. Dr. ...
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Thoughtful personalized care. Wonderful staff.
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Great, caring dentist and staff! Just started going there and need a lot of work done; always happy with the outcome and looking forward to more great service!
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Always a place to be, it feels like home. It's family friendly and patients are special.
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Does good work and takes a conservative approach.
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Awesome visit as always, great staff and they keep me updated on what I need to do to keep my teeth clean and shiny :)
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I am so glad I found Dr. Ko, aside from being an excellent dentist, he is very gentle and kind. I found him by pure serendipity, I got off at the wrong floor and saw Dr. Ko's office. I've been want...
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Dr. Ko is so kind, patient, and caring and will totally put you at ease. His staff is fantastic as well- Maria is so compassionate and sweet and does a fantastic job making you feel comfortable get...
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Very good experience all the way from front desk to Doctor Ko .
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Dr. Ko was very thorough in his explanation of what was to transpire and he continually checked to ensure I was comfortable along the way.
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I chipped a tooth and called his office on a Friday night and they had me in on Monday to take care of the tooth. Dr Ko does great work, is very kind and he understands that most people do not like...
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I was able to book an appointment online and the next day received a call from Esther assisting me with any questions.Dr. Ko and team were able to accommodate me urgently and address my needs. Dr. ...
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Dr. Ko is without a doubt THE MOST Professional, talented, caring dentist I’ve ever been treated by. And at 61 years of age, I’ve been to a few. If you truly want ‘THE BEST’ advice, treatment, frie...
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As always, my visit was smooth and painless. Most importantly, "NO CAVITIES!" The dentist addressed my chief concern and suggested a treatment accordingly.  Maria (his hygienist) is so attenti...
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Dr. Ko is caring, honest and trustworthy. He pays attention to the small details, which means a lot to me. My husband who absolutely hates going to dentists his whole life , doesn’t mind going to d...
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Dr. Ko is an exemplary dentist whom my entire family has trusted as our family dentist for over 15 years. His expertise and commitment to doing high quality dentistry is commendable! His work is al...
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Excellent care and friendly staff ,felt just like family
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Everyone is very friendly and helpful. Never have to wait long for an appt
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First and only Dentist I have trusted.  Never been a fan of going to the Dentist, but have felt more than comfortable and secure with Dr. Ko.  I would definitely recommend Dr. Ko to every...
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Professional, all while caring and taking a personal interest. Very satisfied with my visits and results.
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Dr. Ko and his staff are the greatest. They are very professional. Dr. Ko never suggests or does unnecessary work. Something might become an issue with your teeth in the future, and he tells you so...
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Always a great pleasure to visit Dr. Ko's family friendly office where every staff members are awesome people that makes you want to stay and come back the next day even with no appointment.
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Maria takes care of my teeth just like family members would do.Just another happy camper!😁😁.
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The entire process from scheduling an appointment, being felt welcome upon arrival, prompt appointment times and finally the caring and comprehensive procedure performed makes Dr. Ko and his team&n...
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Been seeing Dr Ko for many years and it's always a good experience. He and his staff and very professional and pleasant.
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I was looking for a new dentist and found Dr. Ko. I called and spoke to the front desk immediately and found all the information I was looking for. When I came in for my initial visit, Dr. Ko and h...
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Best dental practice in Pleasanton!
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Always friendly and caring. Convenient scheduling.
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Dr. Ko is gentle and considerate of my needs as a person with a low pain threshold. I appreciate how professional his staff is, yet they are friendly and compassionate as well.
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Dr. Ko, Kathy & Maria are terrific- Esther too. Two thumbs up and eight fingers- equals 10!
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Excellent experience!
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Very good dentist provides explanation of what type of prom edited you will need in a way yo understand as what to expect
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Everyone I met with, from Esther, to Kathy, Maria, and Dr. Ko himself is very friendly and professional. They appeared to genuinely enjoy working with each other as well, and it was a great experie...
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Been going here for 17 years, excellent personalized care. Friendly and helpful.
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I chose to see Dr. Ko based on recommendations from my Nextdoor 'neighbors' and am very glad that I did.From the minute I walked in I was greeted so warmly and professionally by the entire staff wh...
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Cordial, professional. friendly, fastidious. Very short of any wait time, thorough, knowledgeable, and that is just Dr. Ko staff
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Very good work with an incredible staff . I got 4 crowns done that are perfect and the operation was painless didn't feel anything at all. Great first time experience!
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Dr. Ko did a great job and everything went smoothly.  No problems at all
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Very happy with my visit.  Dr. Ko and his team are professional and gentle with their work. Definitely would recommend him to any people looking for dental care.
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Due to my dental problem and past experiences with dentists, I was very impress and delighted with Dr. Ko's honesty and integrity on his practice.My former dentists wasn't truthfull which resulted ...
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The usual flawless appointmentKeep up the good work
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The BEST!
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Visits with Maria always go well! She is very professional and pleasant to deal with.
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Loved everyone !!! SO warm, welcoming and gentle. And very clean !!!! The chair you sit on during the cleaning is a massaging chair. Have nothing but great things to say. And Dr. Ko is such a nice ...
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Always a professional and friendly experience.
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So awesome! Could not ask for a better dentist! Very patient, kind, and caring! His office staff is also terrific! Kathy has helped me so many times!Would highly recommend!
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The entire team is excellent. I have recommended them to others and will continue to do so.
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Dr.Ko has been my dentist for over 7 yrs now. He has given me the BEST care that anyone could ever dream of! He and his team are the BEST in the tri-valley area definitely! I recommend him to every...
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Great service as usual! Very friendly and very professional as well!
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At the reception desk you will meet Esther, who is very friendly and upbeat, and who will make you feel welcome, and happy that you are there, Next you will meet Maria, who will take your x-rays, a...
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Dr. Ko is profesional, informative & friendly. His staff makes you feel relaxed & welcomed.
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Always excellent service; never any waiting.
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Great dentist and staff
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As a brand new patient that has had a fear of the dentist and had several bad experiences at previous dentists. I was blown away by the kindness and care Dr. Ko and his staff took to make me feel c...
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Dr Ko is the perfect combination of professional and kind. I feel sure he will take very good care of all my dental issues,making sure I am informed and comfortable.Even if you worry about going to...
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Highly recommend.
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I only wish there were Friday and or Saturday hours.
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Dr.ko spend his lunch time to do my emergency tooth filing. The staff are excellent.
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Always a good experience.
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As always the cleaning was so gentle I fell asleep during it and didn't wake up until we were done. Can't ask for more than that! Continues to be the best dentist office I've ever worked with.
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Excellent, as always
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Dr. Ko and the entire team were superb and awesome as always.
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Maria (Hygienest) is VERY caring and I feel like she cared about my teeth as if they were her own!
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Dr. Ko and staff provided me an excellent service as well as cleaning, explained well the cost and work to be done, friendly atmosphere and personnel interaction.I highly recommend to anyone consid...
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Always a pleasure! Very accommodating to my busy schedule!
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Excellent experience as always. Definitely will recommend to all my friends!!!
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Very thorough exam and treatment plan.
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I can’t thank e erroneous in Dr Ko s office enough! I have had so many problems and I know I am a huge paid, but they still take super good care of me. I am able to text with Kathy and she always m...
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My entire experience from making the appointment, being welcomed, getting X-Rays, detailed examination, cleaning and making the next appointment truly surpassed my expectations. I thank, Esther, Ka...
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I am a big fan
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My dental health andl hygiene was in sorry state when I first came to Dr. Ko's office. It was due to many years of negligence - entirely my fault.Today, I enjoy strong teeth and gum, all beautifull...
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Excellent team of dental professionals. Always enjoy to have my appointments.
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Everyone is very nice and professional
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I love going to Maria. She's the best dental hygienist I've ever had.. and Esther is super warm and easy to talk to.. Dr. Ko always gives the best advice.
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I have had the pleasure to receive excellent care from Dr. Ko and his staff and can highly recommend their services to others. I wholeheartedly concur with many of the superlative compliments I've ...
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Wonderful experience! Everyone in the office is pleasant and very attentive to the patients individual needs. They make you feel at home and well cared for! I was with my prior dentist for decades ...
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Maria, my hygienist, is truly the sweets most caring person ever. I tend to chat a lot but today I was crunched for time so she worked quickly to help expedite my visit. You're the best!
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Dr. Ko and his friendly staff always makes my visit to his office a pleasant trip.He is calm, congenial, and is an extremely talented dentist. My wife and I have been enjoying his service for years...
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Support staff is exceptional and friendly. The doctor was thorough in his exam. There were teeth he could have stated were problematic but after testing them, he declared that they were fine. He di...
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Friendly greeting as soon as I walked in, my appointment started on time, and Maria, the dental hygienist, was the absolute best. So glad we found this dental office last year. Crown work Dr. Ko di...
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As always, everyone was so kind to me. I know I am a pain, since I am so nervous all the time, but I am always made to feel much bettter by everyone's kindness. I am hoping some day to have all my ...
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Best dental office ever! The staff are all amazing and take time with each patient to make sure all their needs are met and that you understand all your options. They dealt with the major anxiety t...
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Excellent experience as always, Maria is the best!
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Great staff, friendly, professional and everyone seems to enjoy being there.Also, John Ko, DDS and staff create an atmosphere that make you feel very comfortable.
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Office is always clean and welcoming with staff that want you to feel comfortable.
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So gentle with his injections! The filling I had done was so straight forward and Kathy was so sweet!
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Dr. Ko and his staff are excellent! They are very attentive to your needs and explain things thoroughly. Dr. Ko's skills will assure you a positive and comfortable experience.
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As always great service and job on cleaning my teeth. Thank you, Maria!!
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The visit was very good.
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The staff was once again fantastic. Truly professional, caring, superb specialists and they make you feel comfortable , like you are with family.
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Very happy with Dr. Ko and the friendly staff.
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Excellent as always!
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I had my regular dental cleaning done by Maria today.She performs her work in such calm, professional, caring, friendly way that my visit to her is not something that is to be tolerated for my own ...
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Always a pleasant and professional experience! Thank you!
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My most recent visit was only a teeth cleaning. All I have to say is Maria is the best!
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THe wait time to get in is minimal if Any at all, the staff is kind and curtious, and Dr. Ko is the best at what he does! I recommend him to everyone.
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Excellent
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Maria almost makes me look forward to dental cleaning.
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As always it was not painful, the fact that I get really nervous I enjoy the treatment. They make me feel comfortable.
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Always nice to visit Dr Ko's office. The staff are always warm and friendly. This is one dental office I don't mind visiting and I have had some pretty bad experiences.
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Awesome experience! Painless procedure and I love the headset. Definitely a “10!”
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Great!
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Dr. Ko did a great job fitting my temporary bridge. This is my first time having a bridge and didn't know what to expect. Dr. Ko explained the procedures and offered nitrous oxide if needed. The pr...
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John Ko was incredibly patient, kind, and informative. My mom and I went in as new patients and felt at ease immediately. The entire staff that works there are very genuine and down to earth people...
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Dr. Ko and his assistant performed multiple procedures during my visit. The patient's comfort is their highest concern along with high quality work. The staff is friendly and efficient as well. I h...
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Caring, gentle, thorough.
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I have been going to Dr. Ko for many years now and in spite of the fact that I am not a happy camper when I walk into any dental office, he and his staff do a great job of making the experience as ...
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Cleaning & X-rays went well, but I was disappointed that Dr.Ko was not available to examine a damaged tooth.
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Great as usual
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Professional, courteous, and accommodating office! Though going to the dentist is probably not at the top of most people's "To Do" list (unless you are married to one), I can sincerely say that Dr....
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As always, Maria was very gentle cleaning my teeth. She and Dr. Ko always go out of their way to answer questions and provide reassurance.
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Dr Ko and his staff are all very pleasant, thorough, explain diagnoses and potential problems, and are very willing to work with you.
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The staff really take the time to get to know you, and Maria is the best hygienist I have ever had!
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Great dentist and great staff that make you feel at ease regardless of whether it’s a check-up, cleaning, crown, or major/multiple procedures. I finally have healthy teeth and gums because of them!
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This is the best dentist I've ever been to! Dr. Ko and all his staff are supportive and helpful in every way possible. Their compassion and care goes above and beyond. I have been going to dr. Ko f...
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A very friendly and professional staff. I've been coming to Dr. Ko for a couple of decades since he took over the practice of the former dentist in this location. Dr. Ko is awesome along with his s...
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Maria did an amazing job yesterday.
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Dr. Ko has been my family's provider for years. He and his staff, are fantastic. They've always given us the best treatment.
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Dr. Ko and his staff are very friendly, efficient and capable, regularly conducting my dental work in a timely and pain-free fashion, and answering all my questions about the procedures to be and/o...
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Always well taken care of by Dr.Ko! He is the Best dentist hands down! His staff is Friendly and welcoming and very thorough. I would recommend him to All my friends and family!!
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Excellent, friendly and professional atmosphere. You'll feel the good vibes the moment you walk in the door!
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the best!
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I will highly recommend this place.
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Very friendly staff, excellent service
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Maria is the best!!
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Great experience
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Dr. Ko and all of the staff at this office are extremely kind, patient, and gentle people. The atmosphere in the office, front and back, is comfortable and welcoming. I tell all my friends that it ...
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Dr. Ko and his staff are skilled professionals. I received an excellent cleaning, exam, consultation, treatment and insurance coverage processing. Its a pleasant and relaxing office environment and...
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Maria is an awesome Hygienist! She was very detail and excellent in giving patients education. Most importantly, my cleaning was a "painless" experience. The office is immaculate and the staff are ...
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Service performed was excellent as always
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Dr. Ko and his team always provide excellent service/dental work and explain procedures lucidly. Those are only a few reasons why I've been a patient for the last 15 years.
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Everyone is treated like a VIP, they care about you and your family.
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As always had a very good teeth cleaning visit. Maria is the most meticulous hygenist I have ever met. Dr. Ko came in at the end to review the X-rays. He is very professional and caring.
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Miss Ester took good care of my granddaughter so Maria could take good care of my teeth :)
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Always a pleasure
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Professional and friendly staff. The treatment is always explained first and thorough.
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Thanks to Dr. Ko and his wonderful staff. Thanks Dr.Ko for your gentleness and being thorough with my treatment. Always a pleasure to see everyone:)
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Had two great experiences with Dr. Ko. The first was a regular checkup and cleaning which was so gentle I actually fell asleep during the cleaning! His staff was very courteous, friendly, and clear...
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I have gone to Dr. Ko for years and have always had a great experience with him and his staff. He has also referred me to specialists right here in Pleasanton. Looking for a good dentist, he's the ...
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ALWAYS a positive experience with Dr. Ko due the friendly, professional, and personalized service from the entire staff. I feel as if I'm treated like a friend and not a patient. Wonderful office d...
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Perfect! As usual. The staff are great. Personable and yet professional. Maria is very gentle and thorough with your dental care.
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Awesome experience.
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Dr. Ko is brilliant! I never thought I would look forward to going to a dentist, but that all changed when I first met Dr. Ko about 20 years ago. He is highly trained and an exemplary dentist. Furt...
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Staff is very friendly and the service is excellent. They are patient and explain the details of all the procedures.
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Maria always does a thorough job and is excellent! Thank you!
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Maria is professional, patient, kind and amazing!
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Came in for a cleaning m, stayed for the filling restoration.Last-minute opening and two old fillings were restored painlessly in an hour.Plus we caught up on the upcoming hockey season and our kid...
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Another great experience with Dr Ko.  I have had several crowns with previous dentists and this one was by far the best.  Really quick and though.  Everything feels so well and no pa...
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From Esther to Shelly and Dr Ko and Dr Gloria (all the people whom I actually met and assisted me) very professional but really showed they care about a patient.
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Great as always! Kind considerate and thorough staff.
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Maria was awesome! She was very thorough with my teeth and gentle.
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Excellent as always
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I Wish I had gone here 30 yrs ago. Dr. Ko's clinic is next door to our family doctor. Our dentist, who we saw for more than 30 years, retired and we had to find a new dentist. After an appointment ...
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Truly cares
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Cleaning went well--no problems.
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Dr. Ko, Maria and Esther were great!!!Thanks Maria for your kindness and great work with Mikey's Sealants! Thanks Dr.Ko for your patience and time with Mikey today and Esther, Thank you for your ki...
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Dr. Ko, Maria, Darlene and the rest of the staff make the BEST dental practice! I highly recommend them!!! They take GREAT care of everyone! I've been going to Dr Ko's since he moved his practice t...
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Maria is the best dental hygienist in the business.
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Always friendly, professional, and great customer care.
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First time coming to Dr Ko and his staff and it was a pleasant experience. His staff was professional and I was treated with the utmost respect and personal care. Everyone was friendly and made me ...
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Always available when there is an emergency and overall the best dentist in my 50 something years of dental care.
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As always, a great job on my cleaning by Maria. Better job on the spiritual vibe from Maria.
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best decision we made to switch to dr. ko 14 years ago!!!
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Maria and everyone was great!!
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My dental experience with Dr Ko and his staff was amazing. Ester on the phone and at the front desk, Kathy his assistant and Maria the Hygienist were so professional and nice. It is a happy office ...
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Excellent service again,, as usual.
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Very good experience! I've been coming here for years and love it. Even after moving out of state I come back every six months to see dr Ko!
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It was awesome experience.
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Always amazing care! Came in to cement on a crown and ended up getting a small cavity filled the same day! The entire staff is amazing!!
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my first time getting dental work done it was perfect I had the best experience didn't feel any pain and everyone did a great job
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Great and friendly service.  Dr. Ko's office was able to see me right away.  The even coordinated everything with my insurance.  Great experience.
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Dr. Ko was very gentle and took his time to be so. Miss Kathy was so sweet on caring for me too!
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As always, Maria and Darlene looked out for me, made me feel welcome, and made sure I had a comfortable and complete dental service.
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Maria was so detailed in her method of cleaning my teeth, also very gentle. The best cleaning I ever had!! Dr. Ko took his time with me at the exam portion of the appointment! . Great experience!
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The entire staff at Dr. Ko's office is very friendly and welcoming!
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Dr. Ko, Maria and Darlene are a fantastic group of people that work at this Dental Office. I have been seeing Dr. Ko for many years, and I've even moved away and came back to the Bay Area. When I c...
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Thank you Dr.Ko and Maria for being so caring, and always going up and beyond your work for my three kids, Efrain,Mikey and Alyssa. Thanks again for your hard work!!!
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As ,always my teeth cleaning was very good . Both the cleaning and the personal care Maria puts into her job is wonderful.To all a Happy and blessed Holidays.
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Great dental office - they are professional, friendly, and do an outstanding job!
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Great Staff and Great Service.However I would like to see the TVs working.
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Wonderful! And no cavities
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Maria is always so gentle and thorough in her cleaning my teeth. She is amazing.
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Always on time, friendly, and professional. Fantastic practice and I am so glad that 1-800-DENTIST recommended them.
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Dr Ko was very professional and explained every aspect of the visit in clear language, making sure I understood. He was respectful of the fact that I did not have dental coverage and was paying out...
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Maria did, as usual, an outstanding job. She was completely thorough and professional and did an outstanding job.
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Dr. Ko & his staff was amazing (as usual). The best dentist office in the Bay Area.
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Always a great experience with Dr. Ko., Maria and the rest of the team.
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Dr. Ko is fantastic, and Maria is the best hygienist. They make it easy to go to the dentist! :)
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Excellent care!
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My experiences at Dr. Ko's office have always been positive. He's very gentle and always makes sure I'm "doing OK" when I'm in that chair. :-) His staff is extremely friendly yet very professional....
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Always wonderful! Can not say enough good about them!! They make me feel so comfortable, I have terrible anxiety and they are always so good to me. They even work through their lunch to help me.
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I had a great experience with Dr. Ko! The staff was awesome and organized, the dentist was  hands on and very gentle! Very up to date equipment and techniques! So glad I found them!
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I enjoyed my visit. Everyone was nice and professional. Listened, and helped calm my fears of visiting a new Dentist. The explanations I received helped me understand where I was in terms of where ...
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Doctor Ko and his staff are very professional and give great service. When you arrive at his office you are greeted by Darlene the office manager who is very warm and friendly. Maria gives a very d...
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Always efficient, knowing the work done is profesionally done and not painful. Like taking yr car in and knowing ita the right mechanic, :) KO
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I got a filling after a root canal and it only took 30 minutes! Denise, Kathy and Dr. Ko were super nice and professional as always! I always have a great experience at Dr. Ko's office!
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Thank you all for doing such a GREAT job, as usual! You're the best!!!
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Great experience, as always!
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Great job
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Thanks Dr.Ko for your great work, patience and always being on time!
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This has been my family Dentist for the last 10 years!  I can't say enough about this group of professionals from the front desk - Darlene, our Hygienist -Maria and of course Dr. Ko...Wonderfu...
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Very happy with my cleaning.
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Couldn't have had a better experience! Dr. Ko and his team are wonderful. Dr. Ko was very helpful, professional, knowledgable and kind! I'm glad I started coming to this dental office!
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Absolutely the Best!!!
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Very friendly, efficient, professional office.
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First visit and everyone was very friendly and welcoming. Everything was explained and I was made to feel very comfortable. Everyone thanked me for being a new patient and made me feel that was mor...
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Going to Dr. ko's office is always a pleasant experience. Staff is friendly and professional. Maria, the hygienist, is gentle and thorough.
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Excellent-Maria does a great job!!
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Professional, friendly, and punctual! Great service with a smile!
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Dr Ko is always great! He is friendly, takes a personal interest in you as person as well as a patient. As most, I am not someone that looks forward to a visit to the dentist, but if I must then it...
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Very caring and professional office.
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Excellent service all around.
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Excellent practice; very professional.
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professional and friendly. office location is convenient and work is superior
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My husband and I have been going to Dr. Ko and Maria for years and are very happy.
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Excellent cleaning.
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Dr. Ko and his staff are the epitome of what one looks for in an ideal dentalpractice . . . . highly professional, friendly and caring. They are all of this and more.
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Doctor and staff are always professional, and friendly. They're very responsive to their patients. Even when fully booked, Dr Ko's office found the time to squeeze me into the schedule quickly, eve...
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Everyone makes for the best experience possible
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I love, love, love this dentist and his fabulous staff!  The front office (Darlene) is such a sweetheart and is so accommodating in making appointments. The Dental Hygienist (Maria) is great!&...
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Dr. Ko and his staff make you feel comfortable coming to the dentist. He has the latest pain free equipment and techniques so that great care is always provided.
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Love the staff at this office! Dr. Ko is awesome too! Always a pleasure seeing the friendly staff.
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Always a pleasant experience. Darlene and Maria are polite, remember your dental history and personal background. Not sure it's ever fun to go to the dentist, but they make it a good experience.
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Excellent, as always!
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Maria was very kind and careful when she cleaned my teeth. At 51, I am starting to have exposed roots which are quite sensitive. So she applied some kind of Floride coating and topical anesthetic t...
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Over & over the staff cares, and shows 150% professionalism. I feel taken care of when I leave. One thing I'd like to see, a couch, or more comfortable chairs. :)
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Maria does the most thorough routine cleaning of any hygienist I have ever had.All of the staff is friendly and helpful, and Dr Ko is very professional and gentle.And they are always on time! I hav...
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As always the staff is wonderful! I don't look forward to dental work, but I do know I am in good hands.
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Always great. Dr Ko's staff is amazing.
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Excellent care, no pain.
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My husband and I recently moved to San Francisco from the East Bay and there is no reason to look for another dentist. We have been always pleased with the treatment we have received from Dr. Ko an...
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A '5+Stars' is given to Dr. Ko - and his impressive staff!  His position is, 'not just as an exceptional dentist' but with a heart for his patients.  In times past, i've always experience...
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Very pleasant office. Dr. Ko and staff are very nice, professional and efficient. Glad to have found Dr. Ko as my new dentist
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I could not have a better dentist and support staff than I have at Dr. Ko's
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Maria's service was outstanding, as always.
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Great friendly staff! Everyone is very professional but yet personable at the same time. And gentle with your teeth
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Dr. Ko is always very patient and willing to fully describe any procedure that I am contemplating. He did an excellent job on a crown for me. Maria did an excellent job cleaning my teeth and withou...
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Ok...Dr. Ko - I see everyone left GREAT reviews, leaving me to only agree with each and everyone.My suggestion to you is, continue doing a wonderful job!Maria was A perfectionist When Cleaning My b...
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Maria is always so gentle and thorough when she cleans my teeth. Dr. Ko and his staff are extremely pleasant and accommodating. As I patient of Dr. Ko's for more than 20 years, I highly recommend him.
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Great!
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The appointment was very smooth and educational.
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Personable and professional. A very pleasant experience.
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As always, my teeth cleaning experience with Maria was excellent. She is so gentle, thoughtful, and considerate. Darleen, at the front desk, is also a delight.
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Great visit, as always!
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The plan of treatment was explained before and during the dental treatment; the treatment was painless. I have recommended Dr. Ko to family. Mrs. M. Harding
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Always excellent and personalized care!
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Dr. Ko and his staff are a fine example of most professionally run dental office.Each visit, I leave with sense of being well taken care of, respectfully treated as a patient, and just such a frien...
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Can't say i like dental visits very much, but every visit at John Ko's dental office has always been above & beyond.. I always know i am in great hands. And dental hygienist Maria is always so ...
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It is always a pleasure to visit this office. The staff is always pleasant and professional. The office is clean and they are very timely the service is great. Love it!!Dr. Ko is gentle and he expl...
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Three thumbs up!
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Love, love, love everyone at Dr. Ko's office! He and his staff are great at making you feel comfortable during your visit and I appreciate how they we're able to accommodate me at the last minute, ...
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It is always a pleasure to go to this dentist.
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The best experience I've ever had at the dentist. Darlene the receptionist was phenomenal. Maria the hygienist was excellent very gentle very informative. Dr. Ko and his assistant words cannot desc...
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Dr. Ko is professional and very knowledgeable! I am delighted to be under his care.
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I had my teeth cleaned, and they look better, and the scaling was painless. I was greeted by Dr. Ko, and the hygienist is always delightful.
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I really enjoy going to Dr. Ko because the people in his office are nice and they take a personal interest in who you are. The cleanings are gentle and thorough.
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Dr. Ko is an outstanding dentist...BEST in the Tri-Valley and probably in the TOP 5 in Northern California. He has done very intricate bridge and crown work for me and I know that his work is of th...
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Always a pleasure. Thank you for being such a great staff!
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Hygienist Maria is excellent.
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Always an excellent and professional experience.
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Awesome group of people. Love getting my teeth cleaned. :)
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My family and I have been seeing Dr. Ko for a number of years. I have complete trust in his judgement and technical skill. He is always professional and personable. His analysis is always thorough ...
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Enjoy going to my appt. Maria is great, almost like a daughter.
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Dr. Ko and his staff are great. Very kind and friendly. They take their time with you and ensure that you are very comfortable throughout any procedure. If your looking for a fantastic dentist and ...
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John Ko is a highly dedicated professional, strongly focused on providing outstanding dental care for his patients. I highly recommend him for all dental needs: exams and xrays, occlusion-correctin...
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I could not have asked for a nicer dentist! Dr. Ko is so kind and patient. I have had many dental problems and Dr. Ko always helps me. Darlene, Kathy, and Maria are just the best. They always make ...
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The staff at this office is friendly, professional and very thorough. My teeth are whiter after a general cleaning than they had been in years!
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Best Dentist I've ever had!
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Always great service. Maria is the best at Hygenist.
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Best Dental Practice in Pleasanton.
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Professional and thorough
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Went for regular cleaning, Marie is really understanding of my sensitive teeth issues and makes it a pleasant experience everytime
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Always a pleasure to to go to doctor Ko's office.
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I am so happy with my new teeth! Dr. Ko did such a beautiful job on my crowns. The color matches perfectly and now I'm not embarrassed to smile.  I've been going to dr. Ko for a few years now ...
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Very caring & professional, yet personable... thorough and (probably the most important) gentle with the pointy tools!
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Always a pleasure! I am getting extensive work done and I look forward to seeing Dr. Ko and his staff!
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The desk manager welcomed me as I entered the office. My dental technician Maria was very gentle and kind during my cleaning. I did take extra strength Tylenol an hour before the appointment to min...
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Always great!
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I would recommend this practice in a heartbeat. Dr. Ko and his staff are friendly, professional and efficient. They do their jobs well and with great care. I can always be assured to have a pleasan...
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Excellent as always
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What an amazing blessing this office is!!!  Dr. Ko is an excellent dentist!  I've been twice so far and my family and I are looking forward to great family dentistry care for years to com...
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I am a very picky person. Experiences in the past have shown me that I can choose the best. If I don't see the hygienist, or dentist or even the person at the desk being sensitive to me, I can choo...
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Very professional, friendly service. Quick response to all my questions with helpful info on how to improve your dental coverage. Clean, neat, and comfortable dental care.
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I've been going to Dr Ko for 10 years now, and he and his staff do fantastic work.  Maria (the hygienist)  cleans my teeth (vaneers included) with the utmost precision.  They are fas...
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Very pleasant.
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The professional service provided by Dr. Ko is exceptional. He has superior skills as a dentist and I am always more than satisfied with the level of care that he performs. I only wish he accepted ...
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Dr Ko is the Best Dentist in all of the Nay Area!
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The staff and service is excellent!
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As always, Dr. Ko and his fabulous staff did a fantastic job with getting me in when I had a dental emergency and making my smile shine again!Thank you for the outstanding service you all provide!
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Dr. Ko and his staff are the best! I have had so many tooth problems and am very scared of dental work.They treat me so kind and make me feel very cared for.
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My experience at Dr. Ko's office is always very pleasant and efficient, starting with the warm welcomes from Darlene through my time with gracious dental hygienist Marie, and then with Dr. Ko himself.
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Love Dr. Ko and his staff!
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Excellent
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Love Maria-----she is wonderful---------so is Dr. Ko, of course
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Treat me as a human being, not a number. Maria is excellent and professional.
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As usual a very good job.Professional and comprehensive.
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Maria is an awesome dental hygienist! Friendly, outgoing, gentle and thorough!Everyone on staff is great!
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Awesome as always!
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Dr. Ko is great - have been a long time patient and they have taken excellent care of me. Maria is a fantastic hygienist as well - they are the best!
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maria is great
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Always profession and up beat. Very professional care.
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I enjoy seeing Dr ko and all of his helpful and professional staff for my dental care
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Maria, dental hygenist, Darleen, receptionist, and Dr. Ko are all terrific!!
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John Ko is very thorough and fast working dentist.
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Dr. Ko is an awesome Dentist! His highly skilled and friendly staff do an amazing job each and every time! I cannot thank them enough for their professionalism, knowledge and care over all these ma...
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I had a great experience! The staff at Dr. Ko's office are very professional in their jobs and very caring!
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I had a root canal the week before, and the doctor had to go through an existing crown, so I now needed a filling. Dr. Ko was extremely thorough in explaining the procedure before we got started. H...
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Maria is the greatest ! I hope that she stays with you forever
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Love how progressive this office is! The online appointment system is just another innovative touch that Dr. Ko and his staff are about! My son and I were very impressed with how friendly and infor...
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Marina was excellent as always!
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Dr. Ko is a great dentist and his staff is great, too.
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Relaxed atmosphere, super friendly staff, attention to detail and stellar care!
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Wonderful office! So friendly and welcoming. Dr. Ko and his staff are wonderful! Darlene was so helpful when it came to insurance, and Kathy and Maria were so nice! I usually dislike going to the d...
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Excellent care. Been going to Doctor Ko for years for dental needs and to have Maria to clean my teeth.
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This is a very kind and professional practice.
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You guys are great!
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Very pleased with the friendly and professional staff. They all did a great job while ensuring my comfort.
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Dr. Ko is extremely professional, knowledgeable and kind. His staff are always very friendly and care about the patients.
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Had a pleasant, painless experience having a filling replaced. Dr. Ko and office staff are very caring, and listened to my concerns.
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Maria is wonderful, a very thorough hygienist. A great asset to your practice.
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I experienced another great cleaning appointment.
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Maria is so good and an excellent hygienist!Highly recommended.
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Our experience was great. We finally found a great dentist and office staff. Thank you!
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Thank you all for the wonderful work you perform!
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Dr. Ko and Maria are great! Darlene is always pleasant. What a wonderful team. I highly recommend them.
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Excellent!
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Great dental experience with the entire office! And Dr. Ko is very skilled at keeping you comfortable and does very good work. He is also very good at explaining your condition and what needs to be...
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Always prompt and great service. I appreciate Dr Ko, Maria, and the rest of the team. I recommend them to anyone.
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Top quality care with a patient comfort as the focus! The team at Dr. Ko's office have transformed my impression of dentistry; they have completely eliminated the anxiety I used to have about seein...
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Awesome! Best medical/dental experience ever! Everyone is so very kind. I am so nervous at the dentist and dr? Ko and his staff are so wonderful!
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Top quality dental professional who consistently does outstanding work.
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The best!
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It's always a good visit to the office of John Ko, as everyone there is personable and makes you feel welcome and comfortable. Cleaning and dental work is always done in a prompt and efficient mann...
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As always, Dr. Ko and his staff were fantastic!!
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Maria is the greatest ! I hope that she stays with you forever
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Awesome! Always treated like a queen!
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I love Dr. Ko and his staff! They are very thorough and explain everything along the way. Darlene at the front desk went over my bill with me before I even had the procedure. Wonderful! No surprise...
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I saw Maria, the dental hygienist, for my last appointment. She's friendly, thorough, and very professional. Same goes for Dr. Ko.
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Dr. Ko is an excellent dentist and his staff Maria & Darlene are friendly and helpful.
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Maria is always friendly, and thorough!
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Flawless
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Maria cleaned my teeth, as scheduled, and was gentle and considerate of my gum sensitivity.I'm very pleased to be one of Dr Ko's patients, as he too, is thorough, caring and considerate of his clie...
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Always a very calming experience. Thank you!
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Maria is always professional and delightful.
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Dr Ko and his staff very friendly people.
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Excellent! Best dentist I have ever had!
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Maria is absolutely the best!
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Great staff. Responsive. Easy to make appointments. Friendly
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It is always a pleasure to visit this office the atmosphere and the staff is very professional and caring.
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Ambient , and updated atomosphereProfessional demeanorStaff compliment each others needs, as well as patient's.Prideful performance.EfficientVery accommodating..
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Excellent service and my appointments always begin on time. The operatories are nice and bright!
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Dr. Ko and his assistants/staff provide outstanding dental work in a calm and very friendly environment. Whether it's a filling, crown, a (simple or complex) bridge, or preventive treatment (xrays,...
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I do not have dental insurance, but was in agonizingly chronic pain from a tooth that just had to go.  My jaw was swollen from this one tooth and no matter how much Orajel I used, it wasn't ge...
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Dr. Ko and his staff are great! I was having some pain, swelling and difficulty eating in the area where my wisdom teeth were pulled and he came through for me.  This was a Friday afternoon, w...
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I come here every 6 months to have my teeth cleaned by Maria (dental hygienist) and she does such an exceptional job! She's very thorough and very gentle! She's been a hygienist for over 20 years a...
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One of the best experiences I've had visiting a health care professional. Darlyne at his front office is a delight to talk to and exceptionally organized. She knew me on a first name basis as soon ...
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I had a really bad toothache and i called the office telling them i'd like to get seen ASAP. they got me in the day i called, and helped me take care of the problem. seems like i had a cavity and i...
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