DepartmentsGastroenterology and HepatologyLocationRochester, MinnesotaLanguagesEnglishExisting patientsSend a secure message via patient portal Conditions treatedGastrointestinal disorderSclerosing mesenteritis InterestsDiagnosing gastrointestinal disordersSclerosing mesenteritis Mayo Clinic locations Rochester, Minnesota Driving directions More info Billing & insurance Accessibility services Education1979FellowUniversity of Michigan Hospital1977Resident - Internal MedicineRush-Presbyterian-St. Luke's Medical Center1974MDRush Medical College1972MastersRutgers Medical School Piscataway, New Jersey1970BAUniversity of ChicagoShow more education Activities and honorsCertifications1979GastroenterologyAmerican Board of Internal Medicine1977Internal MedicineAmerican Board of Internal MedicineAwards and honors1993Teaching awardOsler Institute1993James Campbell Distinguished Alumni AwardAwarding Organization1990Teaching and Service AwardDepartment of Internal Medicine1989Finalist - Teaching and Service AwardDepartment of Internal Medicine1986Honorary Society for recognition of teachingMark Lepper Society of Teachers1985Phoenix Award - Awarded by the graduating senior class to the outstanding physician they contacted during their clinical yearsRush Medical College1985Attending Physician Award Department of MedicineRush Presbyterian St. Luke's Hospital1984Alpha Omega Alpha - awarded by graduating senior classRush Medical CollegeShow more awards and honorsProfessional memberships2002 - presentChairGastroenterology Task Force of the Mayo Pharmaceutical Formulary Committee, Division of Gastroenterology and Hepatology, Department of Internal Medicine2002 - presentMemberCoordinating Committee, Mayo Clinic Committees2002 - presentMemberGastroenterology Task Force of the Mayo Pharmaceutical Formulary Committee, Division of Gastroenterology and Hepatology, Department of Internal Medicine2001 - presentChairPractice Management Group, Division of Gastroenterology and Hepatology, Department of Internal Medicine2001 - presentChairUpdates Committee, Division of Gastroenterology and Hepatology, Department of Internal Medicine2001 - presentMemberPractice Management Group, Division of Gastroenterology and Hepatology, Department of Internal Medicine2001 - presentMemberUpdates Committee, Division of Gastroenterology and Hepatology, Department of Internal Medicine2001 - presentMemberOutpatient Practice Committee, Department of Internal Medicine1999 - 2000ChairHospital Interest Group, Saint Marys Hospital1999 - 2000MemberMayo Clinic Education Committee, Mayo Clinic Committees1999 - presentMemberHospital Interest Group, Saint Marys Hospital1993 - 1995ChairCurriculum Subcommittee, Department of Medicine Resident Education Committee, Rush Presbyterian St. Luke's Medical Center1993 - 1995MemberDepartment of Medicine Resident Education Committee, Rush Presbyterian St. Luke's Medical Center1993 - 1995MemberCurriculum Subcommittee, Department of Medicine Resident Education Committee, Rush Presbyterian St. Luke's Medical Center1992 - 1993MemberQuality Assurance Committee, Rush Presbyterian St. Luke's Medical Center1992 - presentMemberNational Celiac Sprue Association1992 - presentMemberMedical Advisory Panel, National Celiac Sprue Association1985 - 1998Medical AdvisorCeliac Sprue Society of the Greater Chicago Area1985 - 1998MemberCeliac Sprue Society of the Greater Chicago Area1985 - 1992MemberAmerican Association for the Advancement of Science1984 - 1987MemberCommittee on Student Evaluations and Promotions, Rush Presbyterian St. Luke's Medical Center1983 - presentMemberAmerican Association for the Study of Liver Diseases1983 - presentMemberAmerican Gastroenterological Association1982 - 1984MemberRush Medical Center1982 - 1984MemberFaculty Senate, Rush Medical Center1981 - 1998MemberChicago Society of Gastroenterology1981 - 1986MemberBone Marrow Transplant GI Consultant, Rush Presbyterian St. Luke's Medical Center1980 - 1983MemberRush Medical College1980 - 1983MemberCurriculum Committee, Rush Medical College1979 - 1998MemberIntern Selection Committee, Rush Presbyterian St. Luke's Medical Center1979 - 1998MemberRush Presbyterian St. Luke's Medical CenterShow more professional membershipsPublicationsSee my publicationsResearch activitiesSee a description of research activities. Conditions treatedInterestsMayo Clinic locationsEducationActivities and honors Request an appointment PST-20217857 Doctors & Medical Staff Schaffner, John A. M.D.