- 2021ExaminerOral Boards, American Board of Radiology 
- 2017 - presentCo-chair/memberASTRO CME and MOC Committee 
- 2015 - presentChairAmerican Board of Radiology GI Section Oral Exam 
- 2014 - presentGI Committe MemberNRG Oncology 
- 2014 - presentCo-Principal InvestigatorNRG Oncology 
- 2013MemberGI Symposium Program Committee 
- 2012 - presentChairDisease Site Leadership 
- 2012 - presentMemberGYN Disease 3-Site 
- 2012 - presentMemberGYN Disease 3-Site Peer Review 
- 2012 - presentMemberAmerican Brachytherapy Society 
- 2012 - presentCommittee MemberASTRO CME and MOC Committee 
- 2011 - presentGroup LeaderGI Disease 3-Site  
- 2011 - presentMember of radiation oncology committeeALLIANCE for clinical trials in cancer 
- 2010 - 2018Oral Board ExaminerAmerican Board of Radiology 
- 2010 - 2015ChairGI Section of Written Initial and MOC Exam, American Board of Radiology 
- 2010MemberCommittee for Oral Exam in GI Malignancies Development, American Board of Radiology 
- 2010ChairEsophago-gastric Section, GI Symposium Program Committee 
- 2009 - 2011MemberGI Symposium Program Committee 
- 2009 - 2011Radiation Oncology Co-chair for GI CommitteeNorth Central Cancer Treatment Group (NCCTG) 
- 2008Oral Board ExaminerAmerican Board of Radiology 
- 2008 - presentBoard Member/OfficerInternational Society of Intraoperative Radiation Therapy 
- 2008 - presentExamination WriterAmerican Board of Radiology 
- 2007Oral Board ExaminerAmerican Board of Radiology 
- 2007 - presentVice ChairDepartment of Radiation Oncology 
- 2004 - 2011GI Committe MemberAmerican College of Surgery Oncology Group 
- 2004 - 2011Radiation Oncology Committee MemberAmerican College of Surgery Oncology Group 
- 2004 - 2011Radiation Oncology Vice Chair for Gastrointestinal MalignanciesAmerican College of Surgery Oncology Group 
- 2003 - 2014Principal InvestigatorRTOG GI and GI Steering Committee 
- 2002 - 2017MemberIntergroup Esophageal and Gastric Cancer Task Force 
- 2002 - 2016MemberIntergroup Pancreas Cancer Task Force 
- 2002 - 2004ChairRadiation Safety Committee, Mayo Clinic Rochester Committees 
- 2002 - 2003MemberEsophageal Cancer Subgroup, Gonda East 9 Work Group, Mayo Clinic Rochester Workgroups 
- 2002 - 2003MemberPancreas Cancer Subgroup, Gonda East 9 Work Group, Mayo Clinic Rochester Workgroups 
- 2002 - 2003MemberColorectal Cancer Subgroup, Gonda East 9 Work Group, Mayo Clinic Rochester Workgroups 
- 2002Vice PresidentRochester Minnesota Chapter, Collegium Aesculapium 
- 2002 - presentChairClinical Practice Committee, Department of Radiation Oncology 
- 2002 - presentMemberExecutive Committee, Department of Radiation Oncology 
- 2002 - presentPrincipal InvestigatorMayo Clinic 12, Radiation Therapy Oncology Group 
- 2001 - presentMemberSteering Committee, Esophageal Adenocarcinoma and Barrett's Esophagus Registry, Mayo Clinic Rochester Committees 
- 2000 - presentChairBrachytherapy Working Group, Department of Radiology 
- 1999 - presentMemberClinical Practice Committee, Department of Radiation Oncology 
- 1998 - 2004MemberRadiation Safety Committee, Mayo Clinic Rochester Committees 
- 1998 - 2002MemberInternational Society of Gynecologic Oncology 
- 1998 - 2000MemberConnective Tissue Oncology Society 
- 1996 - 2003MemberAmerican College of Radiation Oncology 
- 1995 - 1996MemberDigital Image Transmission Committee, Diagnostic Radiology, Department of Radiology 
- 1994 - presentMemberAmerican Board of Radiology 
- 1994 - 2014Committee MemberRTOG GI and GI Steering Committee 
- 1994 - 2011GI Committe MemberNorth Central Cancer Treatment Group (NCCTG) 
- 1994 - 2011Combined Modality Therapy Protocol DevelopmentNorth Central Cancer Treatment Group (NCCTG) 
- 1994 - 1999MemberEducation Committee, Department of Radiation Oncology 
- 1994 - 1998Core Curriculum CoordinatorDepartment of Radiation Oncology 
- 1994 - presentMemberGynecologic Cancer Committee, Mayo Clinic Cancer Center - Rochester, Mayo Clinic Cancer Center 
- 1994 - presentMemberUpper GI Cancer Committee, Mayo Clinic Cancer Center - Rochester, Mayo Clinic Cancer Center 
- 1994 - presentMemberSarcoma Working Group, Mayo Clinic Cancer Center - Rochester, Mayo Clinic Cancer Center 
- 1994 - presentMemberASCO 
- 1993 - 2001MemberRadiation Research Society 
- 1993DelegateMinnesota Medical Association 
- 1992Alternate DelegateMinnesota Medical Association 
- 1991 - 1994DelegateResident Physician Section, American Medical Association 
- 1990 - presentMemberAmerican Society for Therapeutic Radiology and Oncology 
- 1990 - presentMemberAmerican Medical Association 
-  MemberDepartment of Oncology 
-  Abstract ReviewerAmerican Society for Therapeutic Radiology and Oncology 
-  Scientific Session ModeratorAmerican Society for Therapeutic Radiology and Oncology 
-  Radiation Oncology Vice Chair for GIAmerican College of Surgeons Oncology Group 
-  MemberAmerican Society of Clinical Oncology 
-  NCCTG RepresentativeEsophagus-Gastric Task Force, Gastrointestinal Cancer Intergroup, National Cancer Institute 
-  NCCTG RepresentativeIntergroup Pancreas Committee, National Cancer Institute, National Institutes of Health 
-  Radiation Oncology Co-chairGastrointestinal Committee, North Central Cancer Treatment Group 
-  MemberZumbro Valley Medical Society, Minnesota Medical Association 
-  MemberEuropean Society for Therapeutic Radiation and Oncology 
-  MemberSteering Committee, Gastrointestinal Committee, North Central Cancer Treatment Group 
-  MemberGastrointestinal Committee, Radiation Therapy Oncology Group 
-  MemberGastrointestinal Steering Committee, Radiation Therapy Oncology Group 
-  MemberRadiation Oncology Committee, North Central Cancer Treatment Group 
-  MemberGastrointestinal Cancer Committee, American College of Surgeons Oncology Group 
-  MemberRadiation Oncology Committee, American College of Surgeons Oncology Group