About us

Dr. Ryan Simarro was raised in Antioch, California. After graduating from Deer Valley High School, he attended the University of California Santa Barbara, where he earned a degree in cell and developmental biology. Following his graduation, Dr. Simarro attended dental school at Western University of Health Science in Pomona, California, graduating with his DMD as part of the inaugural class. He immediately began practicing dentistry in his hometown of Antioch, partnering with Dr. Mark Miller.

Dr. Simarro is a member of the California Dental Association, the American Dental Association®, the Contra Costa Dental Society and the Seattle Study Club®. Almost all of Dr. Simarro’s family is involved in health care. His wife, Esther, is also a dentist, practicing in San Leandro.

When not at the office, Dr. Simarro enjoys a variety of hobbies. He is heavily involved with his children Summer, and Ben coaching soccer and being involved with the swim team. He loves Bay Area sports and enjoys attending baseball games during the summer. He enjoys spending time with his family, which has been rooted in Antioch and Brentwood for over 50 years. Dr. Simarro also enjoys camping near Santa Cruz and visiting Lake Tahoe, Napa Valley and Santa Barbara.