Dr. Chak is a licensed Neurological Surgery in CA. Graduated in 2013. Medical degree obtained from Stanford Medical School. Completed residency training at Johns Hopkins Medicine and fellowship training at Johns Hopkins Medicine. Currently practices at St. Jude Heritage Medical Group (St. Jude Heritage Medical Group), located at 100 E Valencia Mesa Dr, Fullerton, CA 92835. Dr. Chak specializes in neuro-trauma, minimally invasive cerebrovascular neurosurgery, and surgery for trigeminal neuralgia and Chiari malformation.. In addition to English, Dr. Chak speaks Mandarin and accepts new patients.