- 2021 - presentAppointed MemberRome V - Committee - Age, Gender, Race, Women's Health, and the Patient, Rome Foundation 
- 2019 - 2022MemberResearch Committee, American College of Gastroenterology 
- 2016 - presentMemberSelection Committee, Internal Medicine Residency, Department of Internal Medicine 
- 2015 - presentChairClinical Competency Committee, Gastroenterology Fellowship, Division of Gastroenterology 
- 2013Co-DirectorMotility, Division of Gastroenterology, Department of Internal Medicine 
- 2013 - presentFellowAmerican Gastroenterological Association 
- 2013 - 2019MemberFDA Related Matters Committee, American College of Gastroenterology 
- 2012ConsultantTakeda Pharmaceuticals 
- 2009Co-DirectorMotility, Division of Gastroenterology, Department of Internal Medicine 
- 2009ConsultantProcter & Gamble 
- 2009ConsultantSalix Pharmaceuticals, Inc. 
- 2009 - presentMemberAmerican Society for Gastrointestinal Endoscopy 
- 2008 - 2010ConsultantTakeda Pharmaceuticals 
- 2008ConsultantPrometheus Laboratories 
- 2008 - presentConsultantIronwood Pharmaceuticals 
- 2007 - 2013MemberWomen in Gastroenterology Committee, American College of Gastroenterology 
- 2007ReviewerFunctional Abstracts for October 2007 Meeting, American College of Gastroenterology 
- 2007 - presentAdvisory Board MemberInternational Foundation for Functional Gastrointestinal Disorders 
- 2006 - 2008MemberGastrointestinal Events Research Board, Renzapride-Quintiles, Inc. 
- 2006MemberSelection Committee for Chairman, Division of Gastroenterology, Department of Internal Medicine 
- 2006 - presentMemberEducation Committee, Gastroenterology Fellowship, Division of Gastroenterology 
- 2006 - presentMemberGastroenterology Task Force of the Mayo Pharmaceutical Formulary Committee, Division of Gastroenterology, Department of Internal Medicine 
- 2006 - presentDepartment Education CoordinatorDivision of Gastroenterology, Department of Internal Medicine 
- 2006 - presentMemberDigestive Center for Women Network 
- 2005 - presentMemberAmerican Motility Society 
- 2004 - 2006Co-DirectorIrritable Bowel Syndrome Patient Support Group, Mayo Clinic Arizona Task Forces 
- 2004 - 2006Co-DirectorIrritable Bowel Syndrome Patient Support Group, Division of Gastroenterology, Department of Internal Medicine 
- 2004 - 2006MemberIrritable Bowel Syndrome Patient Support Group, Mayo Clinic Arizona Task Forces 
- 2004 - presentCo-AdvisorJournal Club, Division of Gastroenterology, Department of Internal Medicine 
- 2004 - presentMemberJournal Club, Division of Gastroenterology, Department of Internal Medicine 
- 2003MemberAdvisory Board, American Pharmaceutical Association 
- 2003MemberGastrointestinal Advisory Board on Irritable Bowel Syndrome, Solway Pharmaceutical Co. 
- 2003MemberConsultancy Network - Zelnorm, Novartis Pharmaceuticals 
- 2002MemberGastrointestinal Advisory Board - Alosetron, GlaxoSmithKline 
- 2002 - 2003MemberGastrointestinal Advisory Board - Talnetant for Irritable Bowel Syndrome, GlaxoSmithKline 
- 2002MemberGastrointestinal Advisory Board - Zelnorm Efficacy & Safety, Novartis Pharmaceuticals 
- 2002MemberReintroduction of Lotronex, GlaxoSmithKline 
- 2002 - presentFellowAmerican College of Physicians 
- 2002 - presentMemberFunctional Brain-Gut Research Group 
- 2001MemberGastrointestinal National Advisory Board, GlaxoSmithKline 
- 2001MemberAdvisory Board on Cilansetron, Solway Pharmaceutical Co. 
- 2001MemberGastrointestinal Advisory Board on Irritable Bowel Syndrome & Zelnorm, RuderFinn, Inc. 
- 2001 - presentMemberAmerican College of Gastroenterology 
- 2001 - presentMemberInternational Foundation for Functional Gastrointestinal Disorders 
- 2000MemberLotronex to the FDA, Glaxo Wellcome, Inc. 
- 2000 - 2001MemberIrritable Bowel Syndrome National Advisory Board, Glaxo Wellcome, Inc. 
- 2000Group LeaderIrritable Bowel Syndrome Regional Advisory Board, Glaxo Wellcome, Inc. 
- 2000MemberIrritable Bowel Syndrome National Advisory Board, Novartis Pharmaceuticals 
- 2000MemberGlobal Telegenetics Medical Group 
- 2000MemberLaunch of Lotronex Consultants Meeting, Glaxo Wellcome, Inc. 
- 2000 - 2006EditorGastroenterology Section, praxismd.com (Website for physicians and patients) evolved to Micromedex 
- 1999 - 2004MemberFormulary and Therapeutics Committee, New York Presbyterian Hospital 
- 1999 - 2004MemberGerson Lehrman Financial Group 
- 1999 - 2003MemberAmerican Liver Foundation 
- 1999 - 2000MemberIrritable Bowel Syndrome Regional Advisory Board, Glaxo Wellcome, Inc. 
- 1999ConsultantIrritable Bowel Syndrome Regional Advisory Board, Glaxo Wellcome, Inc. 
- 1990 - presentMemberCrohn's and Colitis Foundation of America 
- 1989 - presentMemberAmerican College of Physicians 
- 1988 - presentMemberNew York Society of Gastrointestinal Endoscopy 
- 1987 - presentMemberAmerican Gastroenterological Association 
- 1979 - presentMemberAmerican Medical Women's Association 
-  FellowAmerican College of Gastroenterology 
-  ConsultantIrritable Bowel Syndrome National Advisory Board, Novartis Pharmaceuticals 
-  ConsultantIrritable Bowel Syndrome National Advisory Board, Glaxo Wellcome, Inc. 
-  ConsultantGastrointestinal Advisory Board on Irritable Bowel Syndrome & Zelnorm, RuderFinn, Inc. 
-  ConsultantGastrointestinal National Advisory Board, GlaxoSmithKline 
-  ConsultantGastrointestinal Advisory Board - Alosetron, GlaxoSmithKline 
-  ConsultantGastrointestinal Advisory Board - Zelnorm Efficacy & Safety, Novartis Pharmaceuticals 
-  ConsultantReintroduction of Lotronex, GlaxoSmithKline 
-  ConsultantGastrointestinal Advisory Board - Talnetant for Irritable Bowel Syndrome, GlaxoSmithKline 
-  ConsultantGastrointestinal Advisory Board on Irritable Bowel Syndrome, Solway Pharmaceutical Co. 
-  ConsultantGerson Lehrman Financial Group 
-  ConsultantGastroenterology, Global Telegenetics Medical Group 
-  Clinical ConsultantAdvisory Board on Cilansetron, Solway Pharmaceutical Co. 
-  Clinical ConsultantLotronex to the FDA, Glaxo Wellcome, Inc. 
-  ConsultantGastrointestinal Events Research Board, Renzapride-Quintiles, Inc. 
-  MemberZelnorm, New Product Bulletin, Advisory Board