Dr. Barouir Deirmenjian
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. Alan Nguyen
Originally born and raised in Orange County, Dr. Alan Nguyen is a triple Bruin, receiving his undergraduate, dental, and orthodontic training at UCLA. In addition to being a member of the American Association of Orthodontics (AAO) and the California Dental Association (CDA), Dr. Nguyen is a board-certified diplomate of the American Board of Orthodontics (ABO).
Dr. Nguyen currently practices at the West Covina location. He is passionate about improving smiles and making the experience fun.
In his free time, he enjoys woodworking, fishing, and golfing.
Dr. Lauren Gleason
Dr. Lauren Gleason is a dedicated general dentist with a strong commitment to patient care and oral health. Raised in Hacienda Heights, CA, and born in Monterey Park, Dr. Gleason has a deep connection to her community, which fuels her passion for helping local residents achieve healthy smiles. She earned her dental degree from UCLA School of Dentistry and furthered her expertise through the Advanced Education in General Dentistry program at the University of the Pacific (UOP). Dr. Gleason also participates in the Spear Continuing Education Study Group, continually expanding her skills to bring the latest advancements in dental care to her patients.
Since joining the practice in 2024, Dr. Gleason has enjoyed the opportunity to connect with patients on a personal level, emphasizing that one of her favorite aspects of her work is getting to know each individual. She is an active member of the California Dental Association and the Academy of General Dentistry, demonstrating her dedication to maintaining high professional standards and staying engaged within her field. Dr. Gleason’s approach to dentistry centers on keeping people healthy and boosting their confidence through their smiles.
Outside of the office, Dr. Gleason enjoys spending quality time with her son, Miles, and relaxing with her two cats, Mo, a black cat, and Sophie, a gray cat. Her roots in the area make coming to work each day feel meaningful, as she knows she’s making a positive impact in the community she grew up in.
Dr. Jonathan Gim
Dr. Jonathan Gim is an accomplished associate dentist with a passion for delivering excellent patient care and visible, immediate results. Born in New York City and raised in Southern California, Dr. Gim pursued his undergraduate studies at the University of California, Los Angeles, before earning his doctorate from Loma Linda University School of Dentistry. With a commitment to continual growth, he has completed specialized continuing education courses in implant dentistry, Invisalign, cosmetic dentistry, and endodontics, equipping him with a diverse skill set to meet his patients’ needs.
Dr. Gim joined our practice in 2024 and values the supportive, collaborative environment that allows him to focus on building strong relationships with his patients. He finds great fulfillment in working with his hands and achieving immediate, impactful results, and he particularly enjoys getting to know his patients personally while helping them reach optimal oral health. His professional affiliations with the American Dental Association, California Dental Association, and Korean-American Dental Association reflect his dedication to maintaining high standards and staying connected within the dental community.
Outside the office, Dr. Gim enjoys watching sports, snowboarding, and spending time with friends and family. These hobbies reflect his active, outgoing nature, and he brings the same enthusiasm and dedication to his work, ensuring each patient has a positive and comfortable experience at the practice.
