Dr. Tan Yong Seng is a Senior Consultant Cardiothoracic and Vascular Surgeon at the Mount Elizabeth Medical Centre. He was previously Director of the Heart Lung Transplant Program at the National Heart Centre, a Senior Consultant Cardiothoracic Surgeon at the National Heart Centre, a Visiting Consultant to the National University Hospital, and a Visiting Consultant to the Tan Tock Seng Hospital.       

He received his MBBS from the National University of Singapore (1984) with distinctions in Biochemistry and Microbiology, and is a Fellow of the Royal College of Surgeons (Edinburgh)(1988), the Academy of Medicine, Singapore (1995), the International College of Surgeons (USA)(2006) and the American College of Cardiology (2006). Dr. Tan also was a Clinical Fellow in Cardiovascular Surgery at the Mayo Clinic, USA (1992) and at the Cleveland Clinic Foundation, USA (1993).

Dr. Tan has extensive experience in adult cardiac surgery including using multiple arterial conduits for coronary artery bypass surgery, off pump coronary artery bypass, mitral and aortic valve repair and replacement surgery, Maze procedure for atrial fibrillation, surgery for thoracic aortic aneurysm, heart transplants, ventricular assist devices, ECMO and heart failure surgery. In addition he also performs general thoracic and vascular surgery.

He has published extensively in peer-reviewed local and international journals and has spoken at conferences in China, Malaysia, Thailand and USA.

His research interests include haemostatic genes in coronary heart diseases, design of a control strategy for postoperative hypertension and the design and assessment of a new sleeve technique for minimally invasive coronary artery bypassing grafting.