Professional and personable services, and reasonable price - values hard to come by these days when everyone seems to just want to make quick money in a hurry. Happy to recommend the doctor. read more

Dr. Ko has cured me of dental trauma. Ive had 3 fillings and a crown and can't say enough good things about the experience... In fact my crown was a completely fun experience ... Yes fun, interesting and exciting. Best part- only 1hour procedure given his cool machine. The entire staff is helpful, friendly and clearly enthused and inspired about what they are doing. I highly recommend him. read more

Been using Dr Ko since he took over Dr Olsen's practice. He's fabulous and friendly, always cutting edge of technology. I have problem issues and he's been fabulous addressing them and giving advise. The office staff is great, the Hygenists are friendly and work hard to make sure you have a comfortable and pain free experience, Shelia's like an old friend now! Could not recommend more highly. Fantastic work for sure, all fillings and crowns have held up for several years with no issues. Great folks. New location is super clean and comfortable as well. read more

My experience with Dr. Ko has been remarkable. I had a dental emergency (severe pain) on a Sunday evening and called him, he met me down at the office and opened up shop and numbed me up, drilled away the cavities, and sent me home with prescriptions. The following day, he sent me a text message from his cell phone to ask how I was feeling. Wow, never met a dentist or doctor with this amount of compassion. Dr. Ko is very knowledgeable and passionate dentistry. He works quickly and explains the procedures as he's performing them. I typically have had trouble with dentists being able to properly numb me up in the past, I told Dr. Ko this and he takes extra time to ensure that I cannot feel any discomfort during the procedure. Great dentist, I recommend him to friends family, and anybody looking for a competent and caring professional. read more

I found Dr Ko on a Friday afternoon. I suddenly had a toothache at lunch time. That's when I learned the majority of dentists take Friday afternoons off. Dr Ko was able to fit me in at the end of the day. He did enough drilling to relieve the pressure and the pain. I have been going to him for a few years now. Dr Ko recently repaired a cavity under a crown. He now has equipment to make make a replacement crown on site within a half of an hour. The cavity and crown was completed with the one appointment. I would like to give a shout out to Sheila the hygienist. I think that is her name. She is gentle, thorough and a sweetheart. read more

Dr. Ko is The best dentist I've ever been to and I'm not so young so I've been to a few in my lifetime. His male assistant is also very good. I've had a partial crown, filings, and broken tooth fixed. Since I'm picky about dental work, I requested that I have a dental damn and air for my nostrils during my mercury filing removal. Dr. Ko happily complied with both of my requests. He has The best bedside manner and always explains thing fairly thoroughly. I couldn't give a higher rating. read more

All the staff are excellent professionals. Pleasant, detailed and helpful. The office is bright, clean and doesn't feel like a dentist office. The equipment is state of the art and immaculate. I had a crown done. First off, I felt no pain at all. Not even numbing the gums. They worked meticulously. All done in the office in two hours. Dr. Ko is truly an artist. read more

Dr Ko is a great dentist with a thoughtful, caring professional staff. The office is beautiful. They got me in early when I was in a super rush. The BEST!!!! read more

Dr. Ko is hands down the BEST dentist! There is no doubt his knowledge and skills are impeccable, and furthermore, his bed side manner is genuine and professional. He truly cares about his patients, and not just their teeth, but their whole well being. He never rushes and is always honest. I used to absolutely hate going to the dentist, but after finding Dr. Ko I never have to be scared again! Also his office staff is amazing, they break down all costs and estimates, they even take the time to explain insurance policies for each individual. As someone who works in the medical field myself, I have very high standards for any patient care and Dr. Ko and his staff exceed my expectations every time! read more

Dr.Ko is my fav dentist. First of all he is a pro dentist and knows how to fix your problem! It sounds ridiculous but seriously not all the dentists know how to fix their patients' problems(they pretend they do tho lol) Secondly he cares 'what you need' and 'what you can do'. It's extremely important for dentist. I'm so over with the dentists telling me 'oh you should do all these things' all the time. Through all my visits I've learned from Dr.Ko 'at least what I should do' 'what I really need to do right now' or 'if financially capable I can think about X next year', etc. It's clear, logical and gives me flexibilities on what I want to do. I also appreciate their transparent payment plan sheet. I used to have dentist telling me 'oh we don't know how much you will spend until you complete all the treatment. ' (man not even roughly?!) I laughed like 'ok I'm not stupid enough to do this shit' LMAO Waiting time is fairly ok as long as you make an appointment. And two weeks in advanced is recommended. read more

Dr. Ko seems like a very good dentist, but there were a few things that gave me a bad feeling about this place, and made me decide to go all the way back into San Francisco to my former dentist: 1) The availability of appointments is VERY limited -- even if you have an urgent situation. Booking a cleaning takes about a month, and I needed to get in right away after almost half of my tooth broke off, and the earliest they could schedule me was five days away. 2) It feels like they care more about getting paid, than they care about taking care of your teeth. I realize they need to get paid, yes of course. But -- they were much more concerned about getting my copayment and pre-authorizing treatment plans, than trying to get me in to actually see Dr. Ko. 3) Yes...the front office staff is nice, but actually unprofessional. It sort of feels like you're talking with a nice child, not a professional. You'll see what I mean. Sorry Dr. Ko -- you seem like a solid dentist, but having to wait five days after half my tooth broke off and was tearing up the inside of my mouth was unacceptable for me. I called up my former dentist in San Francisco, and they're actually moving around other, less-critical appointments in order to see me in the next 24-hours. And -- it'll be done in one visit, and splitting up the copayments over time is fine -- they just want to take care of the tooth first. For anyone interested, Dr. Curt Facchino in SF is terrific and worth the trip into the City. read more

I went to Dr. Ko based on the great Yelp reviews. On a positive note, I was happy with my dental care there - I had a cleaning and exam and then 2 fillings. I thought Dr. Ko and his staff were very nice. However, I cannot recommend this dental practice. I got a treatment plan for my fillings with a cost estimate. The actual cost ended up being MUCH higher because my insurance didn't even cover the type of fillings I had done. Dr. Ko is in network for my insurance - Delta Dental - AND his office called to check my coverage. So I trusted the cost estimate, I had no reason not to. Of course, Dr. Ko blames Delta Dental for not giving his office the right info and Delta Dental blames Dr. Ko's office for not asking the right questions, but in the end it's me that is stuck with an extra bill. Dr. Ko did try to help - he personally called me at one point and he also only held me liable for half of the extra bill. It wasn't enough though. The response time from his office was very slow - almost 2 weeks to get back to me in the first place and my most recent email asking questions over a week ago is still unanswered. If Dr. Ko is going to provide cost estimates to his patients he should stick by them unless something changes in the treatment (I need a root canal instead of a filling or something). Otherwise, just tell me to call insurance myself rather than telling me you've done it for me and then sticking me with the extra bill when you were wrong! read more

Dr. Ko is very professional and competent and has the latest technology in his office. His prices were reasonable and the office staff was extremely friendly. There was no waiting around in the reception area as I have been taken to the treatment area promptly. The office is clean and quiet and Dr. Ko has worked on my teeth with no pain :). As a practicing physician I would recommend Dr. Ko to anyone looking for a dentist in the Walnut Creek Area Gary Hargrove, MD read more

I only go to holistic dentists and Kevin is the finest I have had the pleasure to meet. All aspects of my special needs are always considered. His staff is first rate and the office is a pleasure to visit. The procedures are essentially pain free and his leading edge technology allows for shorter time in the office and fewer visits. My highest recommendation. Smiles, Jim R. read more

I like most people really dislike going to the dentist. To my own detriment, I avoided it for several years. At my sisters recommendation who was and RDA intern in his office a few years ago, I bit the bullet and scheduled an appt. I'm so glad he did for a few reasons: A) He was recommended as a great dentist with the latests technology which made the visits much easier to tolerate for someone who hates getting work done. B) He's good to his employees. This is something that's really important to me. I think it says something about a person who is respectful to those in their employ. Generally a sign of an all around good person. C) Both A & B proved to be true. He is a gentle dentist who is clearly knowledgable and highly skilled. He is conservative in his recommendations and I never felt like he was trying to "upsell" me treatments I didn't need despite how easy this could have been considering how I had neglected my teeth. He is a kind man who seems to really care about his patients. Thank you, Dr. Ko for making an unpleasant part of life less unpleasant :) read more

You probably hate going to the dentist. But you will have an impossible time finding a more pleasant and competent staff. Dr. Ko was able to easily fix a stubborn problem that my former dentist struggled with (some root canal with an ill-fitting crown). And I'd be remiss if I did not mention the friendliest person in the world, Sheila. One usually equates dental work with pain, but when Sheila does it, it feels like chowing down on a big bowl of hearty soup on a beautiful winter day. read more

Having recently moved to Walnut Creek, I didn't have a dentist. A crown came off crewing on some brownings over a weekend. I looked on Yelp and found Dr. Ko who's office was only a five-minute drive away and all the reviews on Yelp were great. I called his office on Monday morning when they opened at 8, they took me instantly, and by 9:30 my crown was back in my mouth ready for more brownies. What a great, quick job. Dr. Ko and his staff were friendly, professional AND TIMELY. They even called a few days later to see how the crown was holding. Perfect. read more

Nothing but great things to say about this Dr. Ko and his staff. Extremely proficient, prompt, professional, and courteous. He gives honest assessment and advice and is great person in general. New office is great also! read more

Dr. Ko is awesome! I was about to leave my husband due to his severe bad breath, but luckily he went to see Dr. Ko. Miraculously, his breath had gotten better after 1 visit. Thanks Dr. Ko, you saved our marriage! read more

Great experience. Was able to make a 7am appointment and be at work on time. Gave good advice, more flossing. Friendly & close to my home. I would recommend Dr Ko to any friends or family in the area. read more

Still the best dentist i've ever encountered! I had to update since I had a crown replaced today, and it was pain free. Dr. Ko is great- patient, dedicated to doing things correctly, and genuinely cares about your experience being a good one. I am truly happy that my children are going to grow up going to a dentist that is so wonderful. Love this whole practice- Dr. Ko and his staff are top notch! read more

Two crowns and some fillings, and my teeth are looking better than ever! It's nice to look in my mouth and see white instead of silver!

Our 3.5-year-old had his 3rd visit with Dr. Ko today. Asked this evening "How was the dentist?" He replied "Dr. Ko is silly!" Best possible reaction in my book. Also, the grownups around here like him too. read more

I moved and needed to find a dentist closer to home. So of course I turned to Yelp for recommendations. I saw that Dr. Ko had fantastic ratings and my PCP back home who I loved had the same last name. When I arrived, the receptionist was very friendly and welcomed me to the practice. Dr. Ko was fabulous! He was very friendly told me about himself, answered all the questions I had and he was very thorough. He explained everything he was going to do, made recommendations and just made me feel very comfortable and important as a patient. I had a great experience and loved the little gift bag which included an electric toothbrush! His staff also sent out a welcome letter which was a very nice touch. So if you are looking for a caring, educated and friendly dental practice with up to date equipment, I would absolutely recommend Dr. Ko's practice. read more

Dr. KO continues to provide excellent care. He listens, he understands every patient is not the same, nor is their care. He errors on the side of caution, which in my case, unfortunately, is imperative. read more

Kevin is great. He's my mothers dentist and I've also had him as my dentist before and he does great work and is very patient and will explain what he does fully and why. Only con is that his services are pretty expensive and he's not in a lot of Dental Plans last time I checked. It would be great if he offered an in-office membership/insurance. I'd go more regularly to him if he had that. Instead, I have to do my regular cleanings and stuff at my insurance covered dentist read more

Dr Ko is a wonderful dentist and his staff are always so friendly. The hygienists are very thorough and do a great job. Highly recommend.

I have always hated the dentist and being a medical management consultant I am very critical of how they run. When I came in, I have never been treated so well by the office staff in a Dentist office. They were friendly and extremely accommodating. Dr. Ko was not only professional but had a great sense of humor. I ended up finding out I had two cavities (and sense I never had any before) I was pretty terrified. They walked me through the whole process, let me know what the best and worst outcomes could be and after filling my second cavity yesterday, he called my house this morning to see how I was doing. Not his staff, Dr. Ko himself. Anyone looking for a dentist in the Walnut Creek area should definitely choose Dr. Ko. He educated me on how to avoid additional cavities and he provides all of the cosmetic dentistry I was thinking of having done. He is a great choice. read more

Called this morning inquiring about becoming a new patient. I was asked what insurance I have which is: Met-life Federal Dental Insurance and was DENIED as "quota" was reached. I believe my dental insurance is pretty good insurance. I guess having 17 years of Federal service working with our Veterans at the VAMC San Francisco doesn't mean much these days. Wow, deflating. I'm Dr. Ko is a great Dentist, but turning down those who serve our Vets and those providing Federal Service to the Dept. of Veteran Affairs for 17 years doesn't mean much. Looks like I got "KO'd"....no pun intended. Mark D read more

I was a patient a number of years ago. Dr. Ko was very professional and highly skilled. He was a really nice person in addition. I appreciate him even more now that I don't have dental insurance. I have gone to a couple of other dentists that lure you in with low cost cleaning and xrays. Then it is very high pressure up-selling. Very uncomfortable - and expensive. Plus with each of these dentists, I got a totally different report on mysterious problems with my teeth and treatment plans with thousands of dollars of dental work I supposedly needed. I have never, never had these kind of checkups in the past. I really trust Dr Ko. He never pulled this kind of high pressure technique when I was his patient. read more

Yup - Dr. Ko gets that extra star now. I had two fillings right up front that have been discolored over years of eating, drinking and living. I asked if they could change that and they said sure no problem. I was a little nervous because these are right up front, you screw those up and I'm embarassed to smile for life. And I was already hesitant to smile showing that area because of discoloration. Well I bit the bullet, made an appointment and was SUPER amazed! I was in and out WITH novacaine in less than an hour and my "patch" matched my teeth flawlessly. Another fantastic appointment! Now I'm trying to convince my co-worker to go because she's not too thrilled about her dentist. If you're in the same boat, just switch. your teeth are too important to not be happy with the person who cares for them. read more

We were very impressed with Dr. Ko and his entire staff. They were friendly, knowledgeable and put us at ease. So glad we found this practice to become a part of. Recommend to everyone! read more

Dr Ko has been my dentist for years. He is gentle and professional. He is also great with kids. My 4 yr old daughter has been seeing him since she was 2. read more

I have a deep pocket behind the last tooth of my lower right jaw and was told I needed gum surgery. I wanted to consult Dr. Ko for a second opinion but had an upcoming trip to LA. A few days before my trip, I called in and to my surprise they were able to schedule me in with such late notice. I went in the day before my trip and Dr. Ko was very nice; he spent the time to explain to me everything he saw and gave me sound advice. As I was taking off, his next patient had arrived. I heard him say: "I'll be with you in a few minutes, let me wolf something down really quick." That was when I realized he had given up his lunch break to fit me in. To me, that shows what kind of dentist Dr. Ko is, he really puts his patients first and really is dedicated to his practice. Thanks Doc! read more

He cares, he's really good, and he fixed my smile. Loves the Warriors, Giants and Cal Sports - first dentist I didn't dread going to.

My husband had a tooth emergency in the morning. Although , my husband was a new patient, dr. Ko was able to see him in the afternoon. Dr. Ko was able to do some minor repairs to fix the tooth. Dr. Ko did not try to persuade my husband to do a costly procedure. Dr. Ko came across as a honest and skillful dentist. Next, I will make an appointment with the Doctor. read more

I have visited Dr. Ko and his friendly/skillful staff for about 4+ times now. Had cleanings and extraction done. Everything went smooth and pain free, and I can't say enough good things about Dr. Ko and how well all my visits have been. Sheila is really nice too and her anesthesia injection skills are phenomenal for the deep cleaning. I drive all the way from San Mateo to Walnut Creek just for Dr. Ko! read more

Dr. Ko very much deserves his 5 Star rating. I think his dental services are excellent and you will not be disappointed. His assistant is also very helpful and easy to work with. read more

Dr. Ko is very professional and friendly, and is also one of the most detail oriented, meticulous dentists I've ever had the pleasure to know. I've had plenty of dental work done over the years by many different dentists. Dr. Ko is the best! His prices are also very reasonable. read more

I've been a patient of Dr. Ko for over two years. He and his staff are true professionals: skilled, courteous and very nice. I like that they use all the latest techniques to make each visit as comfortable and efficient as possible. Very convenient location for me in Central Contra Costa. I recommend Dr. Ko very highly. read more