Dr. Teo Wee Siong is a Consultant Cardiologist and Cardiac Electrophysiologist at the Mount Elizabeth Medical Centre. He is also a Senior Consultant Cardiologist, National Heart Center, a Visiting Consultant Cardiologist, National University Hospital, a Clinical Teacher (Department of Medicine), National University of Singapore and the Director of Electrophysiology and Pacing at the National Heart Centre.

He received his MBBS (1982) and Master of Medicine (Internal Medicine)(1987) from the National University of Singapore.  He started his cardiology training in the Department of Cardiology, Singapore General Hospital in 1987 and went for advanced training in Cardiology (Cardiac Electrophysiology & Pacing) in London, Ontario, Canada under the Ministry of Health Human Manpower Development Plan Fellowship in 1989.

Dr. Teo is a Member of the Royal College of Physicians (UK)(1987) and a Fellow of the Academy of Medicine, Singapore (1992), the Royal College of Physicians (Edinburgh)(1998) and the American College of Cardiology (1998). He has been a member of Cardiac Electrophysiology Society since 1998 and was elected as Fellow of the Heart Rhythm Society in May 2006.

He was the recipient of a Service Quality Award from the Singapore General Hospital in 1996 and the Public Administration Medal (Bronze) National Day Award in 2004.