I used to be a patient of Dr. Ko many years ago before I relocated to Southern Cal. I have nothing but positive things to say about his office etiquette and level of professionalism. The service was always on point. I felt welcomed by his staff and I was always satisfied with his service. I would definitely recommend his services . read more

I had excellent experience with Dr Ko's office . Highly recommend Dr Ko as your dentist, and hygienist Maria she did good job on tooth cleaning that I haven't it for years. I had schedule conflicts when I came in to Dr.Ko's office, his staffs were impressed helpful to work it out. It's not easy to find a good doctor nowadays, I am very happy with my visit and I will come back for my next appointment. read more

I had my first visit with Dr. John Ko two weeks ago and I was very pleased! First off the staff are very friendly, caring, and professional. I felt very welcomed and at ease. Dr. Ko has a very calming presence and you feel at ease in his dental office. He also did a great job in explaining the process of what happens during a root canal and the next steps of adding a crown. I'll be visiting again this week again to add the permanent crown on top of my tooth! A bonus is that they have massage dental chairs, which is a nice touch. This can help ease the tension of getting dental work done. read more

This place has new dentist. Since Dr. Ko is gone. I called several messages and also visited the location about my wife's crown. They said they will get back with me and never did. I wanted to have all my family member to have get lots of work done. They lost me as a customer. read more

Earnest in their dedication to give the best treatment and has a family like atmosphere. When I brought up a random concern during the cleaning, John Ko and his assistants actually took additional time to check on the issue which resulted in going past their normal work hours. I had a persistent problematic filling where food kept getting stuck around it which led to pressure pain, and I was able to fix that problem here by replacing the filling and getting a crown (I somehow thought this would be lifetime issue). Cleanings are also done meticulously and seem effective. I am very happy about this dentist (and also his assistants). read more

Excellent staff! From the moment you walk in when Shirley warmly greets you, you know this is going to be a good experience. Everyone in this office is nice and puts you at ease. Maria is a gentle and excellent hygienist and Dr. Ko is a great Dentist! Highly recommend! read more

Great! My dentist is super thorough and even began helping me to scrape off glue left over from braces that none of my previous dentists saw! Reception desk Esther is awesome and super helpful. Great staff! read more

Very kind and helpful team. Dr. Ko is up to date with technology and best dental techniques. He has helped me with a night guard, emergency dental, and preventative care. The whole team works together well, and makes going to the dentist a pleasant experience. I am actually looking forward to my dental cleaning next month! read more

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. Ko is very thorough and compassionate for his patients, you can tell in the way he presents himself! I have more upcoming appointments scheduled with him and compared to all the dentists I have ever been to I am highly impressed and will for sure stick with him and his awesome team! read more

I've been a patient for many years and have always been a satisfied customer. Dr. Ko and his staff are not only extremely gentle but effective at maintaining my oral and dental health. read more

We arrived here because the previous dentists we had delivered poor quality of work. So far, after one visit I can tell you that they are all VERY nice people; they were attentive and very thorough-- looking at all previous work done and noting any problem areas, while being thoughtful in their delivery. The cleaning was very thorough and done by Maria who is extremely gentle and kind. My 85 year old mother gave me the recommendation for him so I knew Dr Ko was a nice man with a nice manner, haha... and he is! I was a nervous wreck going in and everyone went out of their way to support me. Thank you so much! read more

The office follows all the COVID-19 protocols and goes beyond. It is clean and they use the latest equipment. The staff are friendly and professional, and the office is cheery with lots of natural light. Doctor Ko is very skilled and does excellent work. I recommend their practice to everyone I know. read more

My appointment went so well at this amazing practice! Dr Ko is very knowledgeable and patient as he explained and answered my questions on my dental health. Esther (the receptionist) is amazing and so efficient, making my experience as a new patient really smooth. Kimmy is so sweet as she took my X-rays. Maria (the hygienist) is awesome and evidently knowledgeable as she took such great care cleaning my teeth and educating me! Definitely a great place to go to! read more

Dr. Ko is very detailed in reviewing our dental needs. I also appreciate the warm reception and services of the staff.

I have been a patient of Dr Ko for several years, has always provide professional dental service. Staff members are always friendly and professional. read more

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 YELP 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 :). read more

John H Ko, DDS - Cosmetic Dentists Near Me

I just switched dentists and found Dr. Ko through Yelp. The entire staff feels like an extension of family members. Everyone here is kind and welcoming. I will definitely recommend friends and family. read more

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. Just keeps a close eye on things. Great personality, he and the whole staff put you at ease. Have to praise Maria, the hygienist. Never had a better cleaning. Very gentle touch. Esther and Linda thank you for everything. (Linda, I hope I got your name right. I apologize if I am wrong.) Go see Dr. Ko. We live near Fremont, CA, and drive up to Pleasanton (about a 45 minute drive) because Dr. Ko and staff are that good. Jacquie & Manuel Sousa read more

Always professional and patient with me. I'm a chicken when it comes to dental work and the entire staff is amazing every visit.

I had Very pleasant visit well in formed what would help keep teeth and gums health found I had cavity and would need root canal DR John Ko recommended Tri valley next door Thank You Mr Bowman read more

I was soooo nervous about going to a dentist but Dr Ko and his staff are warm and welcoming. I actually laughed a few times! I was given great care and knowledge about what needed to happen next. read more

Nicest staff and Dentist in that I have experienced. The team seems truly happy and it reflects in their interactions with their patients!

This review pertains to the extreme inconvenience and miscommunication I experienced during a recent emergency visit that I made to this office to have a temporary crown placed on my tooth after it fell off. I called the office first thing 8 am the morning after my crown came off. I explained to the receptionist that I wanted to have a temporary crown placed on it as soon as possible before I left for vacation in a few days. She said I could come in that afternoon to do this, and that she would also schedule a cleaning at the same time. I thought "great"! I arrived on time and was immediately placed in the chair for a cleaning. The hygienist did the cleaning and then I thought "great now to get a temporary crown put in before I go on vacation next week"! WRONG! Then, the dentist walks in, takes a quick peek at my tooth (all of 30 seconds literally!), and says "ok we will schedule another appointment to see you next week". REALLY? I said, but wait, aren't you going to put a temporary crown on me now? He says, no, we will do that next week. I said, but won't my tooth possibly suffer further damage if it is exposed? He said "no". And that was that. So now I've got to come in for a total of 3 appointments at this point when he could have accomplished everything in just 2 appointments! Long story short I came back the following week to get the temp crown put on, and told him I was disappointed he couldn't do it last week. He said "do you still want me to do the work?" Are you kidding me? Like why would I waste my time coming in and allow myself to be seated in the dental chair if I didn't want him to do the work? So now I'm totally upset and I said "no, I guess I don't want you to do the work!" And I left. It was about 2:39 pm by this time and I immediately called my former dentist who is about 15 miles further away (which is why I changed to DR Ko due to his office being next to my work). My previous dentist said "why don't you come in tonight? I can get you in at 7:30 pm if that's not too late for you, and put a temporary crown on you tonight before you leave for vacation because we don't want acid and bacteria to get into that tooth while you are on vacation." So my previous dentist definitely puts patient health before his own personal schedule and in addition, because he sympathizes with the patient he offers to discount my co-pay amount by 50% which DR Ko made up a lame excuse why he couldn't do that which I know for a fact is completely untrue. Anyway, this office just gave me the impression that they are hungry for your money and could care less about inconveniencing you by making you come in for more appointments than would otherwise be necessary to do the exact same work (e.g, the receptionist squeezed me in for a "billable cleaning" on a separate appointment from my temporary crown placement which was the whole point of me going there in the first place!) So, if you want to go to a greedy dentist who is more concerned with maximizing his billable fees and doing things on his own convenient schedule instead of accommodating your schedule, then this is the dentist for you! But, if you want great dental work, a dentist that goes the extra mile, and will occasionally discount his fees out of sympathy for your budget, then look elsewhere. read more

This was my first visit for me with Dr Ko, He did an artistic job of replacing a previously done filling (by another dentist), that had fallen out. It was a front tooth and the coloring and fit is excellent. read more

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 Yelp 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! :) read more

The entire team was spectacular. Esther, Maria, Kimmy and Dr. Ko were fantastic delivering the care needed and made me feel like a valued patient. read more

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 him and his staff. I decided to give him a try and was so impressed with Dr. Kon and his staff- they are all so professional, kind and caring. Esther is the best receptionist, so helpful and friendly! Dr. Ko's assistant (sorry, blanking on her name) is so sweet and lovely, Maria is the best hygienist and Dr. Kon is just the best dentist! They have completely turned around my negative association I had with visiting the dentist to a positive one. Now I look forward to having all my dental check-ups and cleanings done here and will highly recommend to anyone looking for a dentist in the East Bay! read more

I wish I could give a much higher rating than just 5 stars... I've been seeing Dr. Ko for a couple years now and couldn't be happier. Dr. Ko and his team provide the best dental care I've ever had. They are all very skilled, provide great explanations/recommendations, and are focused on ensuring you have a comfortable and no-stress experience. I've never had even the slightest pain from any procedure (including fillings and cleanings - and you know how much they can hurt if done roughly or too rushed). Esther, who manages scheduling, is so kind, responsive and helpful, particularly when an unplanned appointment is needed. Thank you all!! read more

My wife attended this dentistry and overall happy with the quality of service of the dentist and this review is more related with office practices and policies that you should aware when make an appointment to this place. Some context of the situation that is common everywhere: 1. Cleaning appointments happens regularly each 6 months and it is common to schedule in advance. 2. Given the big amount of time normally you get a reminder, typically a call before you appointment to remind you the appointment. 3. There is a no show up policy will charge you $75 dollars which has totally sense due you commit to assist to the appointment and it incur in a loss if you no sho up. Here is the problem: it is expected you get a reminder, in our case nothing and appointment was schedule just after the end of the end of the year holidays. However it was completely forgotten and a text message two hours earlier on the same day day of the appointment. So we called to inform we were not able to make the appointment and need to reschedule. But the office assistant claimed because the policy it need to be informed 48h before which happened exactly during holidays. Generally any dentist office I have been they called and inform in advance of the appointment (mail message and phone call) but we never got a reminder and on most cases they tend to waive at first occurrence to keep the costumer relationship. I tried to politely to waive the fee given the conditions (holidays and never got a reminder) but office assistant keep relying on the policy and when tried to speak just got mad claiming I was interrupting her and hang up the phone so it was not possible to speak with her. I don't recommend this place, I have had better costumer experience other places. I completely understand the no show fee but given 6 months periods I was expecting communication comes in both ways and given how rude was the assistant I recommend check somewhere else or if you like the dentist never make appointments 6 months in advance. read more

Awesome visit as always, great staff and they keep me updated on what I need to do to keep my teeth clean and shiny :)

went for a second time one of the best, most pleasant cleaning experiences I've had had to do crown-related stuff they were great all the staff are skilled, considerate, and meticulous read more

My husband and I, and our children have been patients of Dr. Ko's for the past 12 years, and have only glowing remarks about his expertise, professionalism, care, concern and always personable and honest remarks about our dental issues. His office atmosphere is professional, clean, inviting, comfortable and easily accessible. Furthermore, his entire staff is personable, friendly and industrious! I have always been a perfectionist about my teeth and cared for them well. I brushed and flossed regularly and had my teeth cleaned by Dr. Ko's very knowledgeable hygienist Maria, twice a year. Furthermore, I used Crest White Strips to keep my smile bright! Unfortunately, I'm 72 years old, and some very old dental fillings, on the backside of my six front teeth fell out recently! I was very upset and didn't know if I should have them all refilled, or have porcelain crowns instead. I made up my mind, along with my husband (who knows how vain I have always been) , to go with the porcelain crowns. ( After all, the cost of re-filling those teeth and having them show on the outside would have made me very uncomfortable and unhappy) ! The porcelain crowns on my front six upper front teeth, are beautiful! Dr. Ko did a very painless, intricate and beautiful job. He was certain to get the shade to my liking, which was 'off the charts white' ! Also, he had the technician that worked on them at the lab, polish them to perfection! Dr. Ko also realized that my husband needed a specialist to save his teeth from having to be pulled, after noticing that his gum problems were getting worse, and needed to be addressed by a specialist. He then gave my husband the name of a specialist that was involved with the state-of-the-art saving of one's teeth. (This was not dental implants.) My husband's teeth , as well as mine were saved by Dr. Ko's expertise and care. Dr. Ko has become our loyal and trusted dentist and friend over the years. We trust him explicitly! Wecould not recommend him any higher, or give him more accolades! God bless Dr. Ko and his lovely family and staff! Catalina and Larry Brede read more

So far so good staff is great they are all so welcoming and they know how to make you smile even tho it's my first time here it's a good impression from the start read more

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 relaxing as possible. Dr. Ko and his staff are always kind, warm and very welcoming. Dr. Ko is understanding of the fact that most people would prefer being just about anywhere than a dentists office so he does everything possible to make the experience as positive as he is capable. My wife is far worse than I am about going to the dentist and I could not convince her to go but, after some tooth pain she made the call. My wife was pleasantly surprised and very happy with the demeanor and service she received. If you are looking for a dentist that thinks of the client first, look no further than Dr. Ko. read more

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. read more

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. read more

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!! read more

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 yelp - but had to in this case). Highly recommended! read more

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. read more

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 . read more