Mark O’Neill, MD

St. Thomas’ Hospital and King’s College, London, UK

Dr. O’Neill is a consultant cardiologist and electrophysiologist at St. Thomas’ Hospital London, and Professor of Cardiac Electrophysiology at King’s College London. He graduated from University College Dublin Medical School in 1998 with 1st class honours. His medical degree was intercalated with a cardiovascular physiology doctorate (DPhil), which he completed at Oxford University as a Rhodes Scholar. In London, he trained in general medicine and cardiology, followed by subspecialty training in interventional cardiac electrophysiology at St Mary’s Hospital, London and in Bordeaux, France.

In October 2009, he joined St Thomas’ Hospital and King’s College London in the Department of Cardiology and School of Biomedical Engineering and Imaging Sciences (BMEIS) and was promoted to Professor in 2013. He is currently the Clinical Director of the Cardiovascular Division, Departmental Lead for Arrhythmias in Adult Congenital Heart Disease and the Clinical Research lead for cardiac electrophysiology. His research group integrates clinical and computational research methodologies in signal processing and cardiac imaging to improve arrhythmia characterization and treatment in patients with heart rhythm disturbances. His principal focus is in the field of atrial arrhythmias in which he has published over 150 peer-reviewed papers, most recently in the area of radiofrequency lesion assessment and non-invasive validation of arrhythmia substrate