Meet Us

Meet Eastlake Endodontics

Meet your local Chula Vista endodontists.


Tom Massarat, DDS, MS

Tom Massarat DDS, MS is a Diplomate of the American Board of Endodontics. Dr. Massarat received his Certificate in Endodontics from Northwestern University in 1992. He also received his Dental Degree and Advanced General Dentistry Degree from Northwestern University in Chicago, Ill. Dr. Massarat is a member of the American Dental Association (ADA), American Association of Endodontists (AAE), San Diego County Dental Society (SDCDS) and American Board of Endodontists (ABE). He is also an advisor for the Experdent and Summit Study Groups. He has lectured extensively on many aspect of endodontics.

Brian Chen, DDS

Brian Chen, DDS

Dr. Chen has been practicing dentistry since 2000. Having a passion for endodontics, Dr. Chen returned to the University of Southern California (USC) to complete his specialty training and certificate in Endodontics in 2012.

Dr. Chen is a active specialist member of the American Association of Endodontists (AAE).

Dyana Eidelstein, DMD

Dyana Eidelstein, DMD

Dr. Dyana Eidelstein was raised in Orange County and attended University of California Santa Barbara for her Bachelor’s degree in Psychology. Dr. Eidelstein attended Midwestern University in Arizona where she received her D.M.D. degree. After practicing for two years as a general dentist in San Diego, Dr. Eidelstein completed a two-year endodontic residency at Indiana University, School of Dentistry, graduating with a Certificate in Endodontics as well as Master of Science in Dentistry, M.S.D. degree. Dr. Eidelstein maintains a membership in the California Dental Association (CDA), the American Dental Association (ADA), and the American Association of Endodontists (AAE).

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