Dr. Crystal is a cardiologist and electrophysiologist at the Schulich Heart Centre, founder of the Arrhythmia Services at Sunnybrook and a Professor of Medicine at the University of Toronto. He serves as an Associate Scientist at Sunnybrook Research Institute and the Li Ka Shing Knowledge Institute. He’s authored many peer-reviewed manuscripts and holds numerous patents in the field of cardiology. A member of over 15 scientific committees, a reviewer for numerous journals and co-appointed as Cardiac Electrophysiologist at Women's College Hospital.