- 2014 - 2030
Mayo Clinic in Rochester
- 1999 - present
American Society for Gastrointestinal Endoscopy
- 1999 - present
American College of Gastroenterology
- 1996 - 1998
Board of Directors, Burns Clinic Medical Center
- 1996 - 1998
Burns Clinic Foundation, Burns Clinic Medical Center
- 1996 - 1998
Burns Clinic Foundation, Burns Clinic Medical Center
- 1993 - 2000
Bockus International Gastroenterology Society
- 1993
American College of Physicians
- 1988 - 1998
Michigan State Medical Society
- 1988 - 1998
Northern Michigan Medical Society
- 1986 - present
American Medical Association
- 1986 - present
American Gastroenterological Association
- 1984 - present
American College of Physicians