Tony O’Sullivan is an Professor of Medicine at the University of New South Wales (UNSW), Sydney, Australia. Tony O’Sullivan is the Program Authority, head of curriculum, student affairs, and assessment, for the UNSW Medicine program. His educational research interests are into the assessment of medical students, and the teaching and assessment of professionalism. His biomedical research interests are into the hormonal regulation of body composition and energy metabolism especially in pregnancy. Professor O’Sullivan has published widely in high ranking journals in endocrinology and metabolism, as well as medical education journals. Professor O’Sullivan is Head of the Department of Endocrinology and Diabetes at St George and Sutherland Hospitals, Sydney, Australia.