Dr. Haller graduated from Albert-Ludwigs University Freiburg, Germany, and completed his cardiac surgery training in the Department of Cardiovascular Surgery at the University Hospital Freiburg, Germany, and the Department of Thoracic and Cardiovascular Surgery at the University Hospital Tübingen, Germany. Early in his career, he subspecialized in congenital heart surgery and completed clinical and research fellowships at The Hospital for Sick Children (SickKids) and University of Toronto.
