Dr. David Siu is a cardiologist and Honorary Clinical Professor at The University of Hong Kong. He earned his M.B. B.S. in 1997 and completed cardiology training at Queen Mary Hospital.

Dr. Siu was awarded with Sir Patrick Manson Gold Medal for his M.D. and a Master of Surgery from the University of Hong Kong. He furthered his expertise with a Croucher Foundation research fellowship at the University of California, Davis, USA, from 2006-2007. While joining The University of Hong Kong in 2008, Dr. Siu was promoted to Clinical Professor in 2016.

In 2022 Dr. Siu transitioned to private practice and bringing his experience to private patient care. Dr. Siu is a co-founder and Vice President of the Macau Great Bay Area Cardiovascular Research Society and the Hong Kong Cardiovascular Disease Prevention Society.