Dr. John Jerusalem Tiongson is an Internal Medicine and Adult Neurology Specialist at The Medical City. He obtained his medical degree from the University of the East Ramon Magsaysay Memorial Medical Center College of Medicine and had his Residency in Internal Medicine and Adult Neurology at The Medical City. He is the Director of the Institute of the Neurological Sciences (INS) comprising the Departments of Neurology, where he is also the Chairman, Neurosurgery and Psychiatry. He is a faculty of the Ateneo School of Medicine and Public Health (ASMPH). He is a Governor of the Philippine Neurological Association and heads the Accreditation Team of the society's Adult Neurology Specialty Board which he previously chaired. He is the Advisor and Continuing Medical Education Officer of Proxymm Science in Singapore.