Dr. Chang is a licensed Internal Medicine in CA. Graduated in 1996. Medical degree obtained from Drexel Medical College of Pennsylvania. Completed residency training at UC Irvine Medical Center . Currently practices at Mission Hills Medical Group (Mission Hills Medical Group), located at 25982 Pala, Mission Viejo, CA 92691. Dr. Chang specializes in internal medicine, primary care.. In addition to English, Dr. Chang speaks Taiwanese and Mandarin and accepts new patients.