Dr. Siu is a licensed Internal Medicine in CA. Graduated in 1999. Medical degree obtained from UC San Diego School of Medicine. Completed residency training at Huntington Hospital. Currently practices at Saddleback Medical Group (Saddleback Medical Group), located at 24221 Calle de la Louisa, Laguna Hills, CA 92653. Dr. Siu specializes in internal medicine, primary care.. In addition to English, Dr. Siu speaks Chinese.