He specializes in cardiac electrophysiology, which is the study of disorders of the electrical system, also called arrhythmias. Arrhythmias arise from heartbeats that are too fast, too slow, or just irregular and may result in symptoms of palpitations, fainting and, in rare cases, stroke or sudden cardiac arrest. He has been involved in developing a program in Maine to help patients with atrial fibrillation. This includes a procedure called catheter ablation in which areas of abnormal electrical activity within the heart are ablated or cauterized. He lives in Portland with his wife and 1-year-old son. In January, he will be moving to the University of Wisconsin to become director of electrophysiology.