- 2010 - 2012
Membership and Professional Standards Committee, Region 5, United Network for Organ Sharing
- 2008 - 2011
Education Committee, American Society of Transplantation
- 2007 - 2009
Region 5, Liver and Intestinal Organ Transplant Committee, United Network for Organ Sharing
- 2005 - present
Payor Strategy Committee, Mayo Clinic Arizona Committees
- 2002 - 2006
Hospital Practice Subcommittee, Clinical Practice Committee - Arizona, Executive Operations Team - Arizona
- 2000 - present
American Hepato-Pancreato-Biliary Association
- 1999 - 2002
Program Evaluation Committee, American Association for the Study of Liver Diseases
- 1998 - 2003
Medical Advisory Committee, Arizona Chapter, American Liver Foundation
- 1997 - present
American Society of Transplant Physicians
- 1995 - 1998
Research Committee, Executive Operations Team - Arizona, Mayo Clinic Arizona Committees
- 1995 - present
American College of Physicians
- 1995 - present
International Liver Transplantation Society
- 1994 - 1999
Gastroenterology Endoscopic Subcommittee, Division of Gastroenterology, Department of Internal Medicine
- 1994 - present
American College of Gastroenterology
- 1993 - 1997
Gastroenterology Education Subcommittee, Division of Gastroenterology, Department of Internal Medicine
- 1993 - 1994
Quality Committee, Mayo Clinic Arizona Committees
- 1992 - present
American Gastroenterological Association
- 1992 - present
American Association for the Study of Liver Diseases
- 1992 - present
Board of Directors, Arizona Chapter, American Liver Foundation
- 1990 - present
American College of Physicians
- 1986 - present
American Medical Association