- 2015 - present
MasterAmerican College of Gastroenterology
- 2012 - present
MemberEducation Resources Executive Committee, Mayo Clinic Center for Translational Science Activities
- 2012 - present
MemberAcademic Affairs Executive Committee, Mayo Clinic Center for Translational Science Activities
- 2009 - 2017
MemberEducation Committee, Executive Operations Team - Arizona, Mayo Clinic Arizona Committees
- 2004 - 2011
MemberResearch Committee, Executive Operations Team - Arizona, Mayo Clinic Arizona Committees
- 2004 - 2006
Associate Chair for ResearchDepartment of Internal Medicine
- 2002 - 2003
MemberTask Force on Implementation of HIPPA Regulations and Revisions to Informed Consent Language, Novartis Pharmaceuticals
- 2001 - 2002
MemberSteering Committee on Pediatric Drugs, Novartis Pharmaceuticals
- 1999 - 2000
MemberTask Force on Clinical Research, Johns Hopkins Bayview Medical Center
- 1998 - 2000
MemberExecutive Committee Counsel, Functional Brain-Gut Research Group, American Gastroenterological Association
- 1997 - 2000
MemberGastrointestinal and Hepatology Course Development Committee, The Johns Hopkins University School of Medicine
- 1997 - 1998
MemberTask Force on Clinical Research, The Johns Hopkins University School of Medicine
- 1996 - 2015
FellowAmerican College of Gastroenterology
- 1996 - 2001
ChairAwards Committee, Functional Brain-Gut Research Group
- 1996 - 2000
MemberGastrointestinal and Hepatology Fellowship Selection Committee, Johns Hopkins Bayview Medical Center
- 1996 - 2000
MemberGastrointestinal and Hepatology Fellowship Education Committee, Johns Hopkins Bayview Medical Center
- 1996 - 2000
MemberOffice of Development Executive Committee for the Endowment of the Marvin M. Schuster Center for Digestive and Motility Disorders, Johns Hopkins Bayview Medical Center
- 1996
FounderAwards Committee, Functional Brain-Gut Research Group
- 1993 - 1996
MemberPsychophysiology Course Development Committee, Health Sciences, University of Oklahoma
- 1993 - 1996
MemberOffice of Development Committee for the Endowment of the Lynn Healthcare Research Institute, Integris Medical Center
- 1993 - present
MemberAmerican Gastroenterological Association
- 1991 - present
MemberFunctional Brain-Gut Research Group
- 1990 - 1993
MemberGastrointestinal and Hepatology Fellowship Selection Committee, Johns Hopkins Bayview Medical Center
- 1990 - 1993
MemberGastrointestinal and Hepatology Fellowship Education Committee, Johns Hopkins Bayview Medical Center
- 1990 - present
MemberAmerican Motility Society
- 1990 - present
MemberInternational Motility Society
- 1988 - 1999
MemberSociety for Psychophysiological Research
- 1987 - present
MemberSigma Xi, The Scientific Research Society