Meet Our Doctors

Dr. Barouir Deirmenjian

General Dentist & Owner of B. Deirmenjian and Affiliates

As a general dentist, Dr. Deirmenjian is devoted to providing quality, rewarding, and compassionate care to every patient that visits him. Serving as the founder and CEO of B. Deirmenjian and Affiliates, he serves patients at many multi-specialty facilities in California, including Los Angeles, San Gabriel Valley, Riverside and San Bernardino counties and has just added three new locations in the San Diego area.

With nineteen locations in California, B. Deirmenjian and Affiliates serve patients of all ages, from all backgrounds, and from every walk of life. The team of specialists, general dentists, assistants, and benefit coordinators offer a number of services, including: cosmetic dentistry, dental implants, endodontics, family dentistry, oral surgery, orthodontics, pediatric dentistry, and periodontics. They are dedicated to making dental care rewarding, so that individuals have a reason to share their smile.

Before entering private practice, Dr. Deirmenjian served as Dental Director at Guards Dental, where he demonstrated strong leadership skills in operating over 40 locations. Subsequently, he established his own family dental private practices, Smiles West, Desert Dental Group, and Ponderosa Dental Group.

To prepare for his career, he completed his undergraduate studies at the University of California at Irvine, where he earned his Bachelor of Science degree in 1988. Furthering his studies, he went on to obtain his Doctor of Dental Surgery degree from the University of the Pacific Arthur A. Dugoni School of Dentistry in 1999.

Remaining abreast of the latest dental developments, Dr. Deirmenjian is an active member of the American Dental Association and the California Dental Association. He is also a peer-review member at MetLife Insurance and Liberty Dental, sits on the advisory committee of Henry Schein Dental, is a UCLA adjunct professor, and is board-certified by the Dental Board of California.

Revered for his extensive 30+ year leadership background, Dr. Deirmenjian has been voted #100 on the Inc.5000 Series list of the Fastest-Growing Companies in California and #1528 of the Inc. 5000 Fastest-Growing Companies nationally. He was also named one of LA Business of the Year, Best Office by Insurance Companies, and one of the Emerging Dental Groups to Watch 2020 by Group Dentistry Now.

Dentistry, also known as Dental and Oral Medicine, is a branch of medicine that consists of the study, diagnosis, prevention, and treatment of diseases, disorders, and conditions of the oral cavity. Dentists diagnose and treat dental issues and help patients develop better oral hygiene regimens. They clean teeth, correct bite issues, perform surgeries and extractions, and perform other duties to ensure that the teeth and mouth are healthy.

An active member of his community, Dr. Deirmenjian truly enjoys helping the less fortunate and volunteering when he can with food drives and community outreach initiatives. Previously, he has participated in pro bono work for human trafficking victims in the Los Angeles area. He was also involved in a health fair head-start program, senior citizens program, and maintained an affiliation with Veteran Affairs.

In his spare time, he enjoys the outdoors. He is fluent in English, Armenian, Spanish, and French.

Dr. Ambach Headshot (1)

Dr. Gerhard Ambach

General Dentist

Born in Los Angeles, CA, and raised in Calimesa, CA, Dr. Gerhard Ambach attended multiple institutions throughout California in his journey to obtaining his dental education. This began with an associate’s degree in chemistry from San Bernardino Valley College. From there, he attended the University of California for a bachelor’s in biology. Finally, he completed his doctorate in dental surgery from the University of Southern California. His continuing education includes courses in implants, orthodontics, and oral surgery. 

Joining our practice in 2021, Dr. Ambach enjoys working in an environment characterized by mutual respect and support for our patients and each other. This allows him to maintain a more direct focus on building connections with patients, explaining their treatment needs, and ensuring they are comfortable throughout the process. Dr. Ambach takes pride in his work and is proud to bring his patients the best smile care. 

Outside of work, Dr. Ambach enjoys going for walks, going to the gym, attending hockey games, reading, coin collecting, and spending time with his family.

Dr. Jorge Flores

General Dentist

Bio coming soon.

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Dr. Yong Lai

Orthodontist

Dr. Yong Lai was born and raised in the southern region of California and received his dental degree from the University of Southern California. Upon earning his doctorate in dental surgery (DDS), he completed his orthodontic residency at Roseman University. Dr. Lai is a member of the American Dental Association (ADA) and California Dental Association (CDA).

Joining our practice in 2019, Dr. Lai has enjoyed the ability to improve patients’ smiles and bring them better health and aesthetics through orthodontic treatment. Outside the office, Dr. Lai enjoys spending time with family and friends.

Dr. Michael Vongphoe

Endodontist

Dr. Michael Vongphoe, DDS attended the University of Southern California. As his patient, he will do his best to treat you like family. This includes a transparent and thorough assessment of your dental issues, a clear discussion of your options and most importantly, a quick and pain-free experience. Dr. Vongphoe is a member of the ADA, CDA and the AAE (American Association of Endodontists).

Outside of the office, he enjoys traveling and spending time with his family.

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    Our Stance on COVID-19

    We understand that this is an unprecedented time for many patients with the coronavirus still being an active concern. However, more than ever before, your oral health plays a crucial role in your overall health. The mouth is the gateway to the body, but when common oral infection and disease take hold, it impacts your immune system! This can make you more susceptible to becoming sick in the future. Your best defense is good oral health, and maintaining your regular dental appointments makes that possible. We are following all CDC guidelines to provide our patients and team with a healthy and safe environment to provide life changing dental care.