Dr. Yan is a licensed Optometry in CA. Medical degree obtained from Pennsylvania College of Optometry. Currently practices at 20/20 Optometry (20/20 Optometry), located at 3191 Crow Canyon Place C, San Ramon, CA 94583. Dr. Yan specializes in ocular diseases and management, contact lens fitting, and pediatric optometry. treatment of glaucoma, corneal refractive therapy (CRT), and the use of therapeutic pharmaceutical agents. . In addition to English, Dr. Yan speaks Mandarin and Cantonese and accepts new patients.