Intern, resident in general surgery George Washington University, 1962-1964, chief resident, 1967-1968. Fellow in cardiac surgery Cleveland Clinic Foundation, 1968-1970, staff surgeon thoracic and cardiovascular surgery, 1971-1975, chairman department thoracic and cardiovascular surgery, 1975-1989, chairman board governors, Chief Executive Officer, 1990—2004, retired. Board directors Tenet Healthcare, Santa Barbara.
Trustee Healthcare Leadership Council.
With Medical Corps United States Air Force, 1964-1966. Fellow American College of Surgeons (advisory council for cardiothoracic surgery), American College Cardiology (Theodore and Susan B. Cummings Humanitarian award 1975). Member American Association Thoracic Surgery (treasurer, member council), American Surgical Association, Society Thoracic Surgeons, American College Chest Physicians, Thoracic Surgery Directors Association, American Heart Association (executive committee of council on cardiovascular surgery, Paul Dudley White citation for international service 1980), American Society Artificial Internal Organs Society Vascular Surgery.