John H. Ko, DDS

We Appreciate What Our Patients are Saying!


 Click Here to see our Reviews

     We encourage you to leave us a review on Yelp or Google 

“Dr. Ko and his incredible staff are the reason that I haven’t switched dentisits since 2002. He and his team are so good, that I have commuted from Santa Cruz, and now Sacramento for all of my appointments. I am very particular about my oral health and have dealt with many dentists. None of whom can match Dr. Ko and his teams’ personality, skill and care. They actually make going to the dentist something to anticipate with a smile.”

Scott G., Sacramento

“When I was in to see Dr. Ko last week I was in the chair waiting for him to come in and I felt this incredible gratitude for the commitment to excellence that he lives by. I know that without a doubt I will get the best care possible. His office is outfitted with all of the latest technology, including digital x-ray. Any thing can be explained with ease, (and I usually ask questions). Dr. Ko is an excellent person with great skills, and I have recommended several of my friends over the years to his care. I hope and pray for his continued success.”

Ralph M., San Ramon

“If I had to describe Dr. Ko it would be that he is ultra-competent and caring. A lot of dentists just have one of those traits, but Dr. Ko combines the two. When patients come to Dr. Ko they know that they will be taken care of not only in terms of dental health but also comfort wise. Dr. Ko is great at explaining in layman’s terms what one’s dental health conditions are, and what dental work needs to be done if any. Dr. Ko is always attentive to the patient’s needs, and always greets the patients with a warm smile. I have worked as a dental assistant for over ten years, and I typically am reserved with my compliments, but Dr. Ko is one of the best dentists I have worked for because of his proficiency and because he genuinely cares about his patients.”

Heather H., Pleasanton

“I am flabbergasted by how wonderful the dentist was! He was amazing. The office was lovely. The hygienist was thorough and awesome. Everyone was super friendly and professional.”

Sholley G., Castro Valley

“Dr. Ko has done some extensive work for me and has excelled in making it a pain free and comfortable experience. He truly makes coming to the dentist a stress free experience, and coming from me that means a lot!”

Greg B., San Francisco

"I can't say enough about Dr. Ko. What a nice person and an excellent dentist! I was terrified of going but once there, his staff and he were very pleasant and comforting. Thank you - a very satisfied patient."

Linda Z, Redwood Shores

"I found Dr. Ko to be very honest and compassionate. I have referred my friends and family to him, and they feel the same way. I am so happy to have Dr. Ko as our family dentist. Our kids are verycomfortable with him and we love the staff.”

Becky H., Danville

"I wholeheartedly recommend Dr. Ko and his top notch staff. I greatly appreciate the wonderful, friendly service and the excellent dental care.”

Amy O., San Bruno

"I have seen a number of dentists, and they all wanted to crown all my teeth or sell me something I didn't think I needed. I didn’t get that feeling from Dr. Ko. He was different. He listened to me, and only recommended what I really needed. And, his work was the best. I am very happy to recommend him."

Clayton P., Dublin

“This hygienist Maria is AWESOME! I have never had such a calming experience before coming to this office. Maria makes me feel relaxed and calm and I do not dread going to the dentist anymore.”

Jenny W., San Ramon

"Every experience I've had in the dentist's chair has been miserable, until now. Dr. Ko is the most compassionate dentist I've ever met. The work he's done on my teeth has been top quality. Add to that his ability to calm the nervous wreck in the chair and you have a combination of skills that can't be beat. I'm no longer afraid, and that's pretty much a miracle. I can't recommend him enough."

Denise C., Alamo

"Thank you very much for seeing me today. You are such a kind person who really listens to his patients. It meant the world to me. Your office staff couldn't be any nicer. This is what makes people like me want to drive a distance to receive the best possible care. You are all terrific! I will always remember how nice and caring all of you have been to me."

Vicky V., Stockton

“Your workmanship and customer service are both exceptional.”

Judy C., Alameda

My dental visit went extremely well! The staff was very caring and provided excellent care and eliminated years of dental anxiety, which had prevented me from seeing a dentist for years. Dr. Ko was extraordinary in his approach and thoroughly answered all my questions. Thank you!”

Mark T., San Ramon

Contact Us

We encourage you to contact us with any questions or comments you may have. Please call our office or use the quick contact form below.