Is a consultant cardiologist at Westmead and Blacktown Hospitals and has academic affiliations with Sydney University, Western Sydney University, and the University of New South Wales. He has a track record in cardiovascular research. He runs a research program spanning epidemiology, the utility of novel diagnostic parameters in tracking disease progression, and preventative strategies in clinical cardiology. Dr Tan has also been a local principal investigator in clinical trials including the iAMI trial (the largest randomized controlled trial to date for influenza vaccination and cardiac outcomes) and an investigator in local and national grants. He has contributed to over 120 peer-reviewed publications including book chapters and has presented at several national and international conferences.