Dr. Lock is a licensed Internal Medicine in TX. Graduated in 1991. Medical degree obtained from UT Health Science Center at Houston. Completed residency training at UC Irvine. Currently practices at Memorial Hermann Health System (Memorial Hermann Health System), located at 12121 Richmond Ave, Houston, TX 77082. Dr. Lock specializes in hypertension, cardiovascular disease and diabetes.. In addition to English, Dr. Lock speaks Mandarin and Cantonese.