Dr. Ong is a licensed Internal Medicine in CA. Graduated in 1993. Medical degree obtained from UCSF School of Medicine. Completed residency training at Santa Clara Valley Medical Center. Currently practices at Santa Clara Valley Medical Center (Santa Clara Valley Medical Center), located at 2400 Moorpark Ave, San Jose, CA 95128. Dr. Ong specializes in internal medicine and primary care.. In addition to English, Dr. Ong speaks Mandarin.