• American Association for Thoracic Surgery
  • Member, Membership Committee (1984-1986)
  • Member, Membership Committee (2000-2001)
  • Vice President (2002-2003)
• American College of Surgeons
  • Director, Postgraduate Course in Thoracic Surgery (1985)
• American College of Chest Physicians
  • Chairman, Section on Cancer Steering Committee (1984-1985)
• American Society for Artificial Internal Organs
• American Society of Transplant Surgeons
• American Surgical Association
• American Thoracic Society
• Belgian Royal Society for Surgery
• Canadian Association of Clinical Surgeons, Eastern Division
• Central Surgical Association
• European Surgical Association
• European Society of Thoracic Surgeons
• Fleischner Society
• Institute of Medical Science, University of Toronto
• International Cardiothoracic Society of Surgeons (Japan)
• International Society for Diseases of the Esophagus
• International Society for Heart Transplantation
• Myasthenia Gravis Foundation
  • Member, Medical Advisory Board (1992)
• Royal College of Physicians and Surgeons of Canada
  • Member, Specialty Committee in Cardiovascular & Thoracic Surgery (1982-1985)
• Royal College of Surgeons of Edinburgh
• Royal College of Surgeons of England
• Society of Cardiothoracic Surgeons
• Society of Thoracic Surgeons
  • Member of Council (1986-1988)
  • Member, Program Committee (1979-1982)
• Society of University Surgeons
• Transplantation Society

Local/Regional Societies

• Mid-America Transplant Association
• Missouri Thoracic Society
• St. Louis Surgical Society
• St. Louis Thoracic Surgical Society
• The Academy of Science of St. Louis