Dr. Chao Jyh Chang is a California state licensed medical doctor, specializing in Internal Medicine. Graduated Magna Cum Laude from Brazil, completed residency training in St. Luke's Hospital, Dr. Chang's clinical interests include internal medicine and primary care. Dr. Chang currently is working at Optum Care, located in 4318 N Maine Ave Unit A Baldwin Park CA 91706 Dr. Chang's clinic interests include internal medicine and primary care. Please call +1-626-962-5141 to contact. Access cdoc101.com on a desktop computer to view more details. | |||