Dr. Chang is a licensed Internal Medicine in CA. Graduated in 1987. Medical degree obtained from University Of Wales College Of Medicine. Completed residency training at Kaiser Permanente. Currently practices at Sutter Health (Sutter Health), located at 728 Pacific Ave, San Francisco, CA 94133. Dr. Chang specializes in internal medicine and primary care.. In addition to English, Dr. Chang speaks Mandarin and Cantonese and accepts new patients.