Dr. Chen is a licensed Internal Medicine in CA. Graduated in 1992. Medical degree obtained from Keck School of Medicine of USC. Completed residency training at UCLA-San Fernando Valley¡¯s. Currently practices at Jian A. ChenMD (Jian A. ChenMD), located at 243 March St, Santa Paula, CA 03060. Dr. Chen specializes in internal medicine, primary care.. In addition to English, Dr. Chen speaks Mandarin and accepts new patients.