- 2002 - present
ChairGastroenterology Task Force of the Mayo Pharmaceutical Formulary Committee, Division of Gastroenterology and Hepatology, Department of Internal Medicine
- 2002 - present
MemberCoordinating Committee, Mayo Clinic Committees
- 2002 - present
MemberGastroenterology Task Force of the Mayo Pharmaceutical Formulary Committee, Division of Gastroenterology and Hepatology, Department of Internal Medicine
- 2001 - present
ChairPractice Management Group, Division of Gastroenterology and Hepatology, Department of Internal Medicine
- 2001 - present
ChairUpdates Committee, Division of Gastroenterology and Hepatology, Department of Internal Medicine
- 2001 - present
MemberPractice Management Group, Division of Gastroenterology and Hepatology, Department of Internal Medicine
- 2001 - present
MemberUpdates Committee, Division of Gastroenterology and Hepatology, Department of Internal Medicine
- 2001 - present
MemberOutpatient Practice Committee, Department of Internal Medicine
- 1999 - 2000
ChairHospital Interest Group, Saint Marys Hospital
- 1999 - 2000
MemberMayo Clinic Education Committee, Mayo Clinic Committees
- 1999 - present
MemberHospital Interest Group, Saint Marys Hospital
- 1993 - 1995
ChairCurriculum Subcommittee, Department of Medicine Resident Education Committee, Rush Presbyterian St. Luke's Medical Center
- 1993 - 1995
MemberDepartment of Medicine Resident Education Committee, Rush Presbyterian St. Luke's Medical Center
- 1993 - 1995
MemberCurriculum Subcommittee, Department of Medicine Resident Education Committee, Rush Presbyterian St. Luke's Medical Center
- 1992 - 1993
MemberQuality Assurance Committee, Rush Presbyterian St. Luke's Medical Center
- 1992 - present
MemberNational Celiac Sprue Association
- 1992 - present
MemberMedical Advisory Panel, National Celiac Sprue Association
- 1985 - 1998
Medical AdvisorCeliac Sprue Society of the Greater Chicago Area
- 1985 - 1998
MemberCeliac Sprue Society of the Greater Chicago Area
- 1985 - 1992
MemberAmerican Association for the Advancement of Science
- 1984 - 1987
MemberCommittee on Student Evaluations and Promotions, Rush Presbyterian St. Luke's Medical Center
- 1983 - present
MemberAmerican Association for the Study of Liver Diseases
- 1983 - present
MemberAmerican Gastroenterological Association
- 1982 - 1984
MemberRush Medical Center
- 1982 - 1984
MemberFaculty Senate, Rush Medical Center
- 1981 - 1998
MemberChicago Society of Gastroenterology
- 1981 - 1986
MemberBone Marrow Transplant GI Consultant, Rush Presbyterian St. Luke's Medical Center
- 1980 - 1983
MemberRush Medical College
- 1980 - 1983
MemberCurriculum Committee, Rush Medical College
- 1979 - 1998
MemberIntern Selection Committee, Rush Presbyterian St. Luke's Medical Center
- 1979 - 1998
MemberRush Presbyterian St. Luke's Medical Center