Snell trained at RushUniversityMedicalCenter in Chicago, where he also served as chief medical resident and chief cardiology fellow. He is board-certified in cardiology, critical care medicine and interventional cardiology. He has been on the faculty at Rush since 1991.
Snell has extensive experience in interventional cardiology. His clinical and research interests center on the evaluation and treatment of coronary and peripheral vascular disease, including investigation of new interventional techniques and devices.