Dr. Chang is a licensed Gastroenterology in CA. Graduated in 1998. Medical degree obtained from Northwestern University School of Medicine. Completed residency training at Baylor College of Medicine and fellowship training at UCLA Health. Currently practices at Mission Heritage Mission Viejo (Mission Heritage Mission Viejo), located at 27871 Medical Center Rd, Mission Viejo, CA 92691. Dr. Chang specializes in evaluation and management of disorders of the gastrointestinal tract, pancreas, bile duct, and liver.. In addition to English, Dr. Chang speaks Mandarin and Hokkien and accepts new patients.