Dato Dr Tan is a graduate from University College Dublin, National University of Ireland and subsequently received his doctorate degree in Gastroenterology & Hepatology from the same university.  He is currently a fellow of the Royal College of Physicians of London, Edinburgh and Glasgow, UK, a Fellow of the Academy of Medicine, Malaysia, a Fellow of both the American College of Gastroenterology and the American Society for Gastrointestinal Endoscopy.