Attention Medi-Cal Dental patients! When arriving for your appointment, please have your Medi-Cal Dental ID Card ready. This is necessary for the coverage of your treatments. More information can be found at https://dental.dhcs.ca.gov/. Thank you!

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.

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Dr. Adekunle Ajayi

General Dentist

Bio Coming Soon.

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Dr. David Sewell

General Dentist

Dr. David Sewell grew up in southern Illinois in the St. Louis area. He attended school at Southern Illinois School of Dental Medicine and graduated with honors in 1992. He practiced in Colorado for many years until moving his family to southern California. During his years of practice, he has been devoted to advancing his skills in cosmetic and implant dentistry. 

Dr. Sewell has been a member of a variety of associations and study groups including the ADA, CDA, MDDS, and AGD. He is a member of the American Academy of Implant Dentistry. He studied at the LA Institute of Clinical Dentistry. He has also been honored to lead dental teams on numerous mission trips to Central America.

Dr. Sewell enjoys the problem solving aspect of dentistry. He enjoys carefully listening to patients to find out what their concerns are and what is most important to them in order to fulfill their needs. He finds that by listening, patients practically give you the answer to the problems they may have. He also gives detailed explanations to help them understand their problems and what his team can do about them.

Dr. Sewell currently has 2 cats, but he has owned many different animals in the past — dogs, fish, iguanas, rabbits, turtles, gerbils, and three purebred Arabian horses. He has been involved in many hobbies such as skydiving, scuba diving, music, acting, writing screenplays, performing on stage, building race cars, camping, boating, skiing (snow and water), bicycling, hiking, climbing 14k ft. tall mountains, ballroom dancing, and swing dancing. As you can tell, he enjoys doing a variety of things!

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Dr. Sarine Wajih Tchiroyan

General Dentist Specializing in Complex Root Canal Treatment

Dr. Sarine Tchiroyan joined our practice in 2021. Born and raised in Lebanon, she attended St. Joseph University of Beirut, earning her Doctor of Dental Surgery degree. She has continued education through endodontics conferences, implant courses, and esthetic courses. She is part of the American Dental Association. 

Dr. Sarine enjoys helping patients feel comfortable during each visit. She loves interacting with patients and getting to know them individually. She also loves finding solutions to the challenges with each patient’s case. She finds joy in helping people and easing any dental pain they may have.  

Outside of the office, Dr. Sarine enjoys pilates, yoga, outdoor activities, and traveling. She also enjoys spending time with her two daughters and son.

Dr. Nareg Alexandrian

Orthodontist

Bio coming soon.

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Dr. Duy Nguyen

Exodontist Specializing in Complex Extractions

Born and raised in Vietnam, Dr. Duy Nguyen came to the US when he was 18 years old. He earned his BSEE from the University of Washington in 1991, followed by a DDS from UCLA in 1999. Furthering his knowledge and professional skills, Dr. Duy has also undergone extensive training in oral surgery and dental implants. 

Dr. Duy’s passion for dentistry includes making dental visits as comfortable as possible for each patient as he realizes that most patients may not necessarily enjoy going to the dentist. He thoroughly enjoys interacting with dental patients, truly listening to them, addressing dental problems, and creating trust. 

Dr. Duy is the proud father of two. One has graduated from UC Berkeley with a business major and the second is in high school and is a strong swimmer. He also has a dog named Bingo. Outside of the office, he enjoys spending time with family and socializing with friends.

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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.