What patients are saying
Overall rating
5.00
Average wait time
5.00
Bedside manner
5.00
“They were so friendly and accommodating. I had multiple schedule changes and they helped me through it. So thorough, knowledgeable and the office is immaculate. Forever dentist!”
Connie D.February 24, 2026
“I highly recommend this place. The dentists and the staffs were very nice and professional. The place is nice and clean. Overall I had a great experience and will be back in the future. ”
LCLess than 6 months ago
About Dr. YoungSeong Koh
Dr. YoungSeong Koh is a dentist. He provides in-person services at Laguna Summit Dental in Laguna Hills, CA, where he welcomes patients with varying dental histories and treatment backgrounds.
As part of his formal education, Dr. Koh obtained a dental degree from Loma Linda University School of Dentistry. He is a member of the American Academy of Cosmetic Dentistry and the American Dental Association.
Dr. Koh sees patients for routine check-ups, ongoing care, and specific dental concerns. He supports them in making choices that align with their oral health needs.
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In-network insurances
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Aetna
BlueCross BlueShield
Cigna
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Metlife
UnitedHealthcare
Office location
Education and background
Practice names
Education and training
- Dental School - Loma Linda University School of Dentistry, Doctor of Dental Surgery
Professional memberships
- American Academy of Cosmetic Dentistry
- American Dental Association
Languages spoken
- English
Provider's gender
Male
NPI number
1982053161
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
5.00
Wait time
5.00
Bedside manner
5.00
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12 reviews
Most relevant
Dr. Koh is not only skilled in dental treatment but also a very nice person with a lot of wisdom about life!
Less than 1 year agoSL
I love this dentist he is honest and kind. The staff are really friendly too
Less than 3 months agoMK
Most gentle dentist i have ever met. Finally someone i can trust!
Less than 3 months agoKC
Dr. Was really kind and gentle. Great place for kids
Less than 3 months agoYK
They were so friendly and accommodating. I had multiple schedule changes and they helped me through it. So thorough, knowledgeable and the office is immaculate. Forever dentist!
February 24, 2026Connie D.Verified patient
I highly recommend this place. The dentists and the staffs were very nice and professional. The place is nice and clean. Overall I had a great experience and will be back in the future.
Less than 6 months agoLC
My recent dental experience with Dr. Koh was excellent. I used to be terrified of the dentist, but his team has completely changed that. Dr. Koh is a skilled professional who has a calm and reassuring manner. He explained every step of my recent work, and the injection was so painless, I barely felt it. I highly recommend them to anyone who needs a dentist.
Less than 1 year agoLK
Dr. Koh is amazing! He’s super gentle and really knows what he’s doing — my procedure went so smoothly. The staff are all so friendly and welcoming, and the office is super clean and comfortable. Definitely recommend if you’re looking for a great dentist!
Less than 1 year agoSL
I recently went to Dr. Koh for a check-up, and everything went really well. The office was clean, the staff was friendly, and Dr. Koh was very professional and gentle throughout the visit. He took the time to explain everything clearly and made sure I was comfortable the entire time. I highly recommend Dr. Koh to anyone looking for a great dentist!!
Less than 1 year agoSW
Dr. Koh was amazing! The appointment started right on time, the staff was friendly and organized, and the office felt very clean and modern. Dr. Koh explained everything clearly and made the checkup quick and comfortable. Highly recommend to anyone looking for a caring and professional dentist!
Less than 1 year agoJL
Less than 3 months agoInitials hidden
Less than 3 months agoInitials hidden
How soon can I make an appointment with Dr. YoungSeong Koh?
Generally, Dr. YoungSeong Koh has appointments available on Zocdoc within 1 week. You can see Dr. Koh's earliest availability on Zocdoc and make an appointment online.
Is Dr. YoungSeong Koh accepting new patients?
Dr. YoungSeong Koh generally accepts new patients on Zocdoc. You can see Dr. Koh's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. YoungSeong Koh accept my insurance?
Choose your insurance plan to verify if Dr. Koh is in-network.
Can I make an appointment with Dr. YoungSeong Koh online?
Yes, you can make an appointment online with Dr. Koh using Zocdoc. It’s simple, secure, and free.
What practice does Dr. YoungSeong Koh work with?
Dr. YoungSeong Koh works with Laguna Summit Dental.
Where is Dr. YoungSeong Koh's office located?
Dr. YoungSeong Koh's office is located at 24953 Paseo De Valencia, Laguna Hills, CA 92653.
What are common reasons for patients to see Dr. YoungSeong Koh?
Dr. YoungSeong Koh frequently sees patients for Bridge, Dental Cleaning, Dental Consultation, Pediatric Dentist Consultation, and Root Canal. You can see other visit reasons for Dr. YoungSeong Koh on their profile.
What languages does Dr. YoungSeong Koh speak?
Dr. YoungSeong Koh speaks English.
How do patients rate Dr. YoungSeong Koh in reviews?
12 patients have reviewed Dr. YoungSeong Koh. The overall rating for this doctor is 5/5. They have a 5/5 rating for bedside manner and a 5/5 rating for wait time. You can read individual reviews and ratings on their profile.