Dr. Cha is a licensed Internal Medicine in ON. Graduated in 1984. Medical degree obtained from University of Manitoba - Faculty of Medicine. Currently practices at Dr. James Yi-Ming Cha (Dr. James Yi-Ming Cha), located at 300 King St W, Oshawa, ON L1J 2K1. Dr. Cha specializes in internal medicine and primary care.. In addition to English, Dr. Cha speaks Mandarin.