Dr. Gong is a licensed Internal Medicine in IL. Graduated in 1992. Medical degree obtained from University of Chicago School of Medicine. Completed residency training at Loyola University. Currently practices at John Gong MD (John Gong MD), located at 900 W Il Route 22, Lake Zurich, IL 60047. Dr. Gong specializes in internal medicine and primary care.. In addition to English, Dr. Gong speaks Mandarin.