John Ko, DDS

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!

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… Wonderful group that makes you feel at home, the care that they provide with my children, myself and husband and more importantly their experience and customer service! I have moved to Brentwood and have not found a local dental office yet and still drive to Pleasanton. I have tried a dental office and won’t mention name. They obviously didn’t make an impression… I may have to continue to commute until I find that right place. For now, Dr. Ko and his staff has been amazing, and so far irreplaceable. Highly recommend if you are near this location.

We have been visiting Dr. Ko since relocating to the Bay area almost 5 years ago and have experience nothing but positive from doctor to receptionist to hygienist (Maria is one of the most loving and caring individuals I’ve ever met). I do not hesitate in recommending their services. Thanks and see you soon!

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! My teeth always feel as good as new after cleanings. The Dental Assistant (I forget her name… sorry) is a true gem too ! And I can’t say enough about Dr. Ko… he is phenomenal! He knows his stuff and is great at listening and explaining possible treatment options. Since my husband and I began going to Dr. Ko a few years back, several of our family members have started going to Dr. Ko and even the pickiest relatives are completely satisfied! BTW, the same staff has been with him as long I’ve been seeing Dr. Ko, which says a lot about their friendly office environment.

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.

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 experienced unnecessary pain with other previous dental visits. As a result, i’ve ignored having my teeth upgraded for many years — but then was forced into a position to have a more presentable appearance. During my visit, no discomfort was experienced. After mentioning that more ‘booster injections’ were required in order to eliminate the pain, Dr. Ko resolved the issue. No pain with the injections, & no pain during the procedure. I am looking forward to future visits. After a recent exam with another dentist & then comparing other quotes, his prices are very reasonable. I very rarely leave comments (quite obvious here on Unilocal — but had to in this case). Highly recommended!

Darlene, Maria, Dr. Ko and the other staff members are awesome! I’ve never had better dental experiences than I’ve had here the last 5 years or so!

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 come.
Dr. Ko and his office team set the tone for gentle loving care from start to finish.
1) User-​Friendly Website: The website is very nice, user friendly and easy to navigate.
2) Great Location: The office is conveniently located in a professional medical/​office building across the parking lot from Stoneridge Mall. The inside smells nice, is modern, television is available during dentistry work and most importantly… the office is impeccably clean which is important to me in this line of work.
3) Quality Staff: The office administrator, Darlene and Dr. Ko’s dental assistants are very welcoming, non-​judgement and seem genuinely interested to get to know me. I appreciate the fact that the staff are caring and well organized.
3) Stress & Pain-​Free: Then there’s Dr. Ko. I told him after all my years of seeing dentists, I have never met a dentist in my life that is as gentle and good with the needle as he is. Amazing!!! For the first time. Both times that I’ve come for fillings, i didn’t even feel the needle go in.
Dr. Ko, thank you for helping me learn to trust dentists again. I’m so happy that many of my friends highly recommended you. I don’t see their reviews on Unilocal but for those that are reading this review… I received at least 4 strong recommendations to go see Dr. Ko on Facebook and in person. After seeing him, he actually reassured me, giving me hope again and has taken care each time to carefully explain what he’s doing as he moves along.
If you’re searching for looking for a reliable and caring dentist you can trust, I strongly encourage you to give Dr. Ko a try. God places people where he wants them and He is definitely using Dr. Ko to make a difference in people’s lives in the realm of dentistry. Thank you Dr. Ko :).

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 fast, thorough and professional. Very highly recommended.

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 getting better, and yes, I understand Orajel is not a cure, it’s simply numbing medicine.
I went to 1−800-DENTIST and they promptly recommended a few dentists in the area, but I decided to go with Dr. Ko because his office is not only across the street from where I work, but I read his reviews here on Unilocal and based on that alone, I decided he’s worth looking into.
I called the office to ask questions regarding payments (a big concern thanks to lack of insurance) and they said I had some options. Still have to pay the full price for the procedures, but was able to work out a payment plan, thank GOD!
I spoke to Darlene on the phone and, let me tell you, she is one of the sweetest little ladies you will ever meet! I always smile when I speak to her because her optimism is very contagious!
Maria and Dr. Ko were both very attentive and gentle as can be, as well. I had to be put on Amoxicillin one week prior to my procedure since I have a heart murmur, but I expected that. At least I didn’t swell when they extracted three teeth from the same side of my mouth! That’s right, three at once. My teeth are a mess. As I explained to Dr. Ko, my mouth is like a horror movie!
Dr. Ko and Maria also excercised great patience when I was having trouble getting numb. They ended up having to do a total of four injections of the local anesthesia (I didn’t want to be gassed up). However, once they were finally able to start my procedure, everything went as smooth as can be and there was no pain (that is, until the anesthesia wore off). At the last minute, two of the extraction turned into oral surguries, but they did not charge me extra.
I still have to have about $ 5,000 worth of dental work to go, but we’re off to a good start and I will only let Dr. Ko and his team do my dental work.
All in all, very friendly, extremely proffessional staff that work with you no matter what. This is exactly how every doctor and dentist should be. If you don’t believe me, read the other 5 star reviews! :)

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 and really knows how to clean your teeth properly. I’ve been to some pretty bad hygienists and they just don’t compare to Maria. Not only is Maria wonderful, the whole office is such a delight to be around! Darlene at the front desk is so sweet, she makes you feel right at home, even at a dental office! Dr. Ko is an awesome dentist, I had a small cavity and I didn’t feel a thing, even the injection which is the worst part! He’s very thorough as well!
I would highly recommend anyone to come here if they’re looking for quality dentistry! The office is clean, the staff is amazing and if I could give this office more than a 5 star review I would give them 10!

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 as I walked into the office. I waited all of 2 minutes before seeing Dr. Ko and one of his assistants. They used what probably is the most modern dental imaging equipment available and Dr. Ko took the time to explain everything to me. Hes a good guy — he played Ice Hockey growing up. Next I met with the Dental Hygienist, Maria, who also took her time to do the job right. The office has a synergy about it were everyone is professional and exceptional at what they do– there are no rough corners. If ever run a business I would hope to have it run as smoothly as Dr. Ko’s office.