Dr. Wu is a licensed Internal Medicine in CA. Graduated in 1982. Medical degree obtained from Shanghai, Shanghai Jiaotong Univ. Sch of Med in China. Completed residency training at UCSF Health. Currently practices at Wu Chengcong MD (Wu Chengcong MD), located at 1476 Winterwood Lane, Diamond Bar, CA 91765. Dr. Wu specializes in internal medicine and primary care.. In addition to English, Dr. Wu speaks Mandarin.