Dr. William Yip is a renowned paediatric cardiologist practicing at Gleneagles Hospital, Singapore, with over 40 years of experience. He is one of the few doctors in Singapore trained in both paediatric medicine and cardiology, with a special interest in interventional cardiology for congenital heart diseases, such as Fallot’s tetralogy, ventricular septal defect, atrial septal defect, and also foetal cardiology and electrocardiology. Dr. Yip was instrumental in developing echocardiography and interventional cardiac procedures in the University Department of Paediatrics at Singapore General Hospital and the National University of Singapore.

He held the position of associate professor at the Department of Paediatrics, National University of Singapore, and served as the head of the Division of Paediatric Cardiology at National University Hospital. He remains an adjunct professor and visiting consultant at the university. Dr. Yip performed the first series of advanced cardiac procedures in Singapore, such as balloon valvuloplasty, angioplasty, device occlusion, and foetal echocardiography. He has contributed significantly to education in paediatric cardiology, mentoring both undergraduate and postgraduate students. Dr. Yip's extensive contributions to the field have earned him numerous accolades, including the 2009 Singapore Cardiac Society Lectureship. He has published 191 research papers, 254 conference papers, and authored 14 books or chapters in his field.