Dr. Chang is a licensed Internal Medicine in CA. Graduated in 2006. Medical degree obtained from Western University of Health Sciences. Completed residency training at Santa Clara Valley Medical Center. Currently practices at Kaiser Permanente (Kaiser Permanente), located at 1515 Newell Ave, Walnut Creek, CA 94596. Dr. Chang specializes in internal medicine and primary care.. In addition to English, Dr. Chang speaks Taiwanese and Mandarin.