Jack OH, DDS
Call now
Call now
Website
Call
Jack OH, DDS
Modern technology, regular training, and an eye on current developments in dentistry research - we do everything to ensure your teeth get expert treatment. Our relaxed atmosphere and friendly service go hand in hand. We have a new diode laser system that offers Soft Tissue Surgery, 20-Minute Laser Whitening, and Pain Therapy.

Look under the "Technology" tab to learn more about the EPIC laser innovation from BIOLASE. Our address is 2705 S. Diamond Bar Blvd, Suite 288. We are located at the corner of S.Diamond Bar Blvd and Fountain Springs Rd., off the 57 Freeway in between the Pathfinder and Diamond Bar Blvd exits.
Services
Should you require emergency dental service, please contact our emergency call service at 909-444-9400. If you take special care of your teeth and they are in good condition, you should come to see us for a checkup at least twice a year. If your teeth are predisposed to problems, you should be on the safe side and make an appointment for preventative care regularly.
From prevention to restorative dentistry: We offer the entire range of modern dentistry to keep your teeth healthy and beautiful for your entire life. Get an overview here of the types of treatments we offer. Periodonitis is a serious gum disease that, untreated, can not only lead to tooth loss, but also can cause bone loss in the jaw.
Reviews (20)
Peter R.
Peter R.
Oct 29, 2021
Report
Had my first visit with Dr.Oh and his staff. The office was super clean, the staff was very welcoming, and each one made it a point to thank me for allowing them to work on my teeth.

It's been a long time that I've been able to say, I really enjoyed my trip to the dentist!

Thanks Dr Oh and staff for treating me like family on my first visit! See you next time!
Jane Marie Roberts
Jane Marie Roberts
Oct 19, 2021
Report
Dr. Oh’s office is amazing! I have horror stories of previous dentists I’ve seen and stopped going for almost 10 years because of it. I kind of lost faith in the dental industry. But after my first visit, I know I will be a long time patient!
First, their office is in a great location with lots of parking. Easy to find and super clean.
When you walk in everyone is so friendly. The front staff is pleasant and makes you feel welcome. The tech who handled my X-rays was very professional and nice. The hygienist is great as well.
Dr. Oh is very professional and down to earth. Not stuffy or makes
Reggie A.
Reggie A.
May 03, 2021
Report
Great dentist and team. Honest, good work is hard to come by in the dental world. These guys are the best. My in laws have gone here for over a decade. I finally made the switch and couldn't be happier.
Nancy V.
Nancy V.
Apr 26, 2021
Report
Dr Oh is very professional and truly cares for his patients. Had a emergency over the weekend and he actually called me to direct me and how to care for my grandson's chipped tooth, scheduled me an appointment for first thing Monday morning. My daughter said with her insurance she did not receive the same treatment. Dr Oh is a genuine DR. His office staff is top notch. They are very friendly and treat you like family. I recommend him to everyone.
Uroosa K.
Uroosa K.
Mar 13, 2021
Report
Having to fix stuff he did really badly , was long waits every time I went. Will never go back here
Chuck T.
Chuck T.
Dec 28, 2020
Report
Do not recommend! Was going here for years in the past but after my last visit I will never go back nor will I ever refer people here again! Went in for a deep cleaning they spent over an hour just setting up and taking x-rays. The tech that was doing my x rays apparently screwed up and had to redo certain parts over and over which was extremely frustrating. Guessing she was new or something which isn't my fault. But do to that they ended up only doing one side of my mouth, which may be normal ? But what pissed me off was that they charged for all the extra x rays that they took and my insurance
William D.
William D.
Dec 01, 2020
Report
Best dentist in all of San Gabriel valley. Also very reasonable prices. Been going to him for years
John Martinez
John Martinez
Oct 27, 2020
Report
Dr. Oh and his crew are absolutely phenomenal! Hands down the most honest, thorough, and reliable dental practitioner I have ever experienced. If you are having trouble finding a great DDS, look no further! Would recommend this practice for any of your dental needs.
J. L.
J. L.
Oct 02, 2020
Report
Oh I certainly DID contact the office directly. Left a message and received a threatening phone call from one of the ladies in the office. Have all receipts and my oral surgeon has all the X-rays - 2 years worth - obtained from your office.
Eunice Seon
Eunice Seon
Aug 14, 2020
Report
Friendly Staff and Follow the covid 19 safety practices. They offer affordable plans for those who don’t have any insurance. They will take care of you, just give them a call to book an appointment.
Maria Ruiz
Maria Ruiz
Jan 05, 2020
Report
Dr Oh is the best dentist he has been my family dentist for 24 years my Sons were 2 years when I took them for the first time and all the employees have a great customer service Mercedes has been there for more than 20 years and She make you feel in family if you are looking for a great Dentist Dr Oh is the one.
Ja Vian J.
Ja Vian J.
Oct 30, 2019
Report
I have been coming to Dr. Oh over 23 years. I raised my son with Dr. Oh as our dentist and it was an excellent choice. My experiences with Dr. Oh have kept our smiles white and confident. Thank you, Dr. Oh for not just being a great dentist but a great person.
Kyle C.
Kyle C.
Sep 23, 2019
Report
Dr. Oh is wonderful he does great work. We come from Arizona to see.
His staff is WONDERFUL.
M. E.
M. E.
Aug 11, 2019
Report
His dad joke game is strong!
took my son here after my friend recommended it. he is the only dentist to successfully complete a normal visit w my ridiculously scared 5 year old.
Alfredo A.
Alfredo A.
Aug 10, 2019
Report
Dr. Oh and staff are the most welcoming people I've ever met! Dr. Oh is hilarious and makes you comfortable. I find it crazy that they always remember who we are and can continue a conversation from were you left off.
Derek F.
Derek F.
Jul 24, 2019
Report
Visited Dr. Oh for the first time yesterday, since a small piece of my tooth chipped off while I was flossing. Didn't have insurance, so I just looked for dentists in my area. The prices they gave me on the phone were very competitive, so I decided to book an appointment here.

The building is very nice, the staff is friendly and helpful. Dr. Oh himself is extremely friendly and approachable, an all-around jovial fellow. I had the chance to chat with the assistants for a while in order to allow the anesthesia to kick in, and they're all very nice people.

The treatment itself went pretty
Tatiana Z.
Tatiana Z.
Jul 05, 2019
Report
Dr. Oh is an amazing dentist! I did pretty much the whole spectrum of dental procedures with him form simple fillings to dental implants. Always the latest technology, great honest advice. The staff is beyond great, too. Appointments reminders, transparent billing, and always nice. Thank you!
Space
Space
May 18, 2019
Report
I had a great experience with this dentistry. All the staff (especially Mrs Mercedes & Sonia) are kind and make patients feel at home and Dr. Oh is very skillful. My partial gold which went off was recemented very strong with an amazing price. Thanks you all!
James N.
James N.
Jan 30, 2019
Report
Had a great experience with Dr Oh and the staff. They have been nothing short of fantastic! The office staff Sonia and Mercedes are kind and helpful. Dr oh is competent and kind. Can't ask for more! I highly recommend here to anyone looking for great service.
Mark A.
Mark A.
Mar 03, 2017
Report
I hadn't gone to get a dental checkup/cleaning in 5 years because my last experience was traumatic. The dentist herself was super nice, but as she was doing the cleaning, it seemed like she was hitting various tooth nerves multiple times and it was excruciating. I never wanted to do that again.

But I figured it was time, and reading the reviews for Dr. Oh, I decided to take the plunge and finally go in for a checkup/cleaning.

Dr. Oh himself was extremely friendly and honest, and was very up front about what I needed and more importantly, what I didn't need. He said my teeth were