National Societies

• American Board of Colon and Rectal Surgery
  • Associate Examiner 1986-1990
  • Director/American College of Surgeons Representative, 1996-present
• American Board of Surgery
• Guest Examiner, April, 1986
• Director/American Board of Colon and Rectal Surgery Representative, 1996-present
• American College of Surgeons, Fellow
  • Residency Review Committee for Colon and Rectal Surgery,
    1995-2000 (Vice Chair, 1997-2000)
  • Graduate Medical Education Committee, 1999-present
• American Gastroenterological Association
• American Medical Association
• American Society of Clinical Oncology
• American Society of Colon and Rectal Surgeons, Fellow
  • Awards Committee, 1987-1989 (Chairman, 1989)
  • Program Committee, 1989-1990
  • Public Relations Committee, 1989-1990
  • Residents Committee (Chair), 1994-1996
  • Executive Council, Member-at-large, 1996 - 1999
  • Treasurer, 1999-2000
  • President-elect, 2000-2001
  • President, 2001
• American Surgical Association
• Association of Program Directors in Surgery
• Central Surgical Association
• Collegium Internationale Chirurgiae Digestive
• International Society of Intraoperative Radiation Therapy
• International Society of University Colon and Rectal Surgeons
• The Piedmont Society of Colon & Rectal Surgeons
• Program Directors Association in Colon and Rectal Surgery
  • President, 1991-1994
• Society for Surgery of the Alimentary Tract
• Society of Surgical Oncology
• Southwestern Surgical Congress

Local and Regional Societies

• College of Physicians of Philadelphia (Fellow)
• Pennsylvania Academy of Surgery
• Pennsylvania Medical Society
• Pennsylvania Society of Colon and Rectal Surgeons
  • Council-Member-at-Large, 1998-2000
  • Treasurer, 2000-2002
  • President-elect, 2002-present
• Philadelphia County Medical Society
• Southern Medical Association
  • Section on Colon and Rectal Surgery, Chairman, 1983
• St. Louis Metropolitan Medical Society
  • Ethics Committee, 1987-1989
• St. Louis Surgical Society
  • Nominating Committee, 1986
• Washington University Alumni Executive Council

National, Local and Regional Scientific Committees

• Johnson and Johnson Products, Inc., Surgical Advisory Panel, 1983-1990
• Power Med Interventions, Inc., Surgical Advisory Board, 2001-present