Dr. Nanthakumar is an Associate Professor of Medicine at the University Health Network. After receiving his MD at the University of Toronto in 1995, he pursued his interests in Internal Medicine and Cardiology in Toronto. He subsequently completed his cardiac electrophysiology training at the University of Alabama at Birmingham, where he studied the mechanisms of cardiac fibrillation. His clinical expertise is focused on the management of cardiac arrhythmias and devices in heart failure, including performing catheter ablations and implanting biventricular defibrillators.

Dr. Nanthakumar's key research interests are the mechanisms of human VF, CPR (Cardiopulmonary Resuscitation) and electrophysiology of cardiac regenerative therapy. He has received the Early Researcher Award from the Ministry of Innovation, as well as the Clinician Scientist Award from the Canadian Institutes of Health Research. In addition, Dr. Nanthakumar has received grants from the Canadian Institutes of Health Research and the Heart and Stroke Foundation for his work on the mechanisms of human VF and CPR. He is currently researching the mechanism of VF in explanted human hearts and electrophysiological consequences of cardiac regenerative therapy.