An internationally recognized cardiovascular physician-scientist, Dr. Cain is a specialist in abnormal heart rhythms. He is board-certified in internal medicine, cardiovascular diseases and clinical cardiac electrophysiology and pacing. He is a fellow of the American College of Cardiology, the American Heart Association and the Heart Rhythm Society.

A former associate editor of Circulation, Cain is a member of the editorial boards of the American Journal of Cardiology, the Journal of Cardiovascular Electrophysiology, Nature Clinical Practice Cardiovascular Medicine and Heart Rhythm.

His NIH-supported research has focused on determining the mechanisms of life-threatening heart rhythm abnormalities that occur in heart attacks and other conditions that damage heart muscle cells. This information is being used to better characterize and more accurately localize the abnormal heart tissue responsible for these abnormal heart rhythms and to improve the identification of patients at increased risk for sudden cardiac death.