Dr. Jen is a licensed Internal Medicine in CA. Graduated in 1998. Medical degree obtained from Keck School of Medicine of USC. Completed residency training at UCLA Health. Currently practices at Optum Care (Optum Care), located at 416 W. Las Tunas Dr, San Gabriel, CA 91776. Dr. Jen specializes in internal medicine and primary care.. In addition to English, Dr. Jen speaks Mandarin and Cantonese.