- 2018 - present
MemberRoyal Society of Medicine
- 2017 - present
Scientific Program CommitteeInternational Academy of Aviation and Space Medicine
- 2016 - 2017
PresidentAirline Medical Directors Association
- 2015 - 2018
DirectorInternational Commission on Occupational Health
- 2014 - 2018
ChairPublic Health Committee, Arizona Medical Association
- 2014 - 2019
ChairHistorical Activities Subcommittee, Education Committee, Executive Operations Team - Arizona
- 2012 - 2015
Executive Council MemberInternational Academy of Aviation and Space Medicine
- 2012 - 2014
ChairSection Council on Preventive Medicine, American Medical Association
- 2011 - 2012
PresidentArizona Medical Association
- 2011 - present
ParliamentarianAerospace Medical Association
- 2010 - 2019
DelegateAmerican College of Occupational and Environmental Medicine, American Medical Association
- 2010 - 2019
ACOEM Delegate to the AMAAmerican Medical Association
- 2010 - 2018
Vice ChairLegislative Affairs Committee, Arizona Medical Association
- 2010 - 2011
President ElectArizona Medical Association
- 2009 - 2010
Vice PresidentArizona Medical Association
- 2009 - 2016
ChairHistory and Archives Section, American College of Occupational and Environmental Medicine
- 2009 - 2010
ChairScientific Program Committee, Airline Medical Directors Association
- 2009 - present
MemberExecutive Council, Airline Medical Directors Association
- 2009 - present
MemberHistory and Archives Section, American College of Occupational and Environmental Medicine
- 2008 - 2009
PresidentAmerican College of Occupational and Environmental Medicine
- 2007 - 2008
President ElectAmerican College of Occupational and Environmental Medicine
- 2007 - 2010
SelectorInternational Academy of Aviation and Space Medicine
- 2007 - 2008
ChairCommittee on Reports and Resolutions, Arizona Medical Association
- 2007 - present
MemberBoard of Directors, Arizona Medical Association
- 2006 - present
MemberHistory of Prevention of Occupational and Environmental Diseases Scientific Committee, International Commission on Occupational Health
- 2006 - 2007
Vice PresidentAmerican College of Occupational and Environmental Medicine
- 2006 - 2009
ChairExhibits, Airline Medical Directors Association
- 2006 - 2007
Chairman of the BoardWestern Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2005 - 2016
Planning CommitteeHealth Conference, Western Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2005 - 2006
Ex-OfficioProgram Committee 2005, Western Occupational Health Conference, Monterey, CA, Western Occupational and Environmental Medical Association
- 2005 - 2006
PresidentWestern Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2005
OrganizerGrand Rounds, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 2005 - present
MemberInternational Activities Council, American College of Occupational and Environmental Medicine
- 2004 - 2007
ChairPreventive and Occupational Medicine, Physician Review Panel, Mayo Clinic Arizona Committees
- 2004 - 2005
MemberExecutive Council, Airline Medical Directors Association
- 2004 - 2005
ChairCommittee on Reports and Resolutions, Arizona Medical Association
- 2004
Vice PresidentExecutive Committee, Western Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2004 - present
MemberBoard of Directors, American College of Occupational and Environmental Medicine
- 2004 - present
ChairExternal Affairs Council, American College of Occupational and Environmental Medicine
- 2003
Second Vice PresidentExecutive Committee, Western Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2003
ChairLegislative Affairs Committee, Western Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2002 - 2006
ChairInternational Activities Committee/Global Health Committee, American College of Preventive Medicine
- 2002 - 2009
MemberScientific Program Committee, Airline Medical Directors Association
- 2002 - present
WOEMA Delegate to ACOEM House of DelegatesWestern Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2001 - 2002
Scientific Program ChairWestern Occupational Health Conference, Phoenix 2002, Western Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2001 - 2005
MemberExecutive Committee, American College of Preventive Medicine
- 2001 - 2005
MemberOccupational Medicine Regent, American College of Preventive Medicine
- 2001 - 2003
ChairInternational Activities Committee, Mayo Clinic Arizona Committees
- 2001 - 2003
ChairInternational Activities Coordinating Committee, Mayo Clinic Arizona Committees
- 2001 - 2003
MemberInternational Activities Committee, Mayo Clinic Committees
- 2001 - 2003
MemberExecutive Committee, International Activities Committee, Mayo Clinic Committees
- 2001 - 2003
MemberFinance Committee, Mayo Clinic Arizona Committees
- 2001
Vice ChairInternational Activities Coordinating Committee, Mayo Clinic Arizona Committees
- 2001 - present
FellowInternational Academy of Aviation and Space Medicine
- 2001 - present
National Secretary for United StatesInternational Commission on Occupational Health
- 2000 - 2006
MemberExecutive Committee, Western Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2000 - 2002
DirectorExecutive Committee, Western Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2000 - 2002
Program Chairman and Conference Chairman2002 Scientific Program, Western Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 2000 - present
MemberInternational Activities Committee, Aerospace Medical Association
- 1999 - 2019
DelegateACOEM House of Delegates, American College of Occupational and Environmental Medicine
- 1999 - 2018
MemberPublic Health Committee, Arizona Medical Association
- 1999 - 2007
MemberAdministrative Committee, Department of Internal Medicine
- 1999 - 2003
MemberCanada Subcommittee, International Activities Coordinating Committee, Mayo Clinic Committees
- 1999 - 2000
SpeakerACOEM House of Delegates, American College of Occupational and Environmental Medicine
- 1998 - present
MemberInternational Activities Committee/Global Health Committee, American College of Preventive Medicine
- 1998 - 2003
MemberInternational Activities Coordinating Committee, Mayo Clinic Arizona Committees
- 1998 - 2002
MemberOutpatient Clinical Practice Committee, Department of Internal Medicine
- 1998 - 1999
MemberExecutive Council, Airline Medical Directors Association
- 1998 - 1999
Speaker ElectACOEM House of Delegates, American College of Occupational and Environmental Medicine
- 1998
Scientific Program Co-ChairState of the Art Conference, Phoenix 1998, American College of Occupational and Environmental Medicine
- 1997 - 2018
MemberLegislative Affairs Committee, Arizona Medical Association
- 1997 - 2007
Member ex-officioEnvironmental Safety Subcommittee, Clinical Practice Committee - Arizona, Executive Operations Team - Arizona
- 1997 - 2004
MemberEducation Committee, Department of Internal Medicine
- 1997 - 2002
MemberInfection Control Subcommittee, Clinical Practice Committee - Arizona, Executive Operations Team - Arizona
- 1997 - 2000
MemberBoard of Directors, American College of Occupational and Environmental Medicine
- 1997 - 1998
RecorderACOEM House of Delegates, American College of Occupational and Environmental Medicine
- 1997 - present
MemberWestern Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1996 - present
MemberArizona Medical Association
- 1996 - 1997
MemberMidwest Center for Occupational Health and Safety Advisory Board
- 1996
Task Force MemberStrategy Task Force, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1996 - present
MemberMaricopa County Medical Association
- 1995 - 1998
ChairMedical Center Occupational Health Section, American College of Occupational and Environmental Medicine
- 1995 - 1996
MemberContinuous Improvement Council, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1995 - 1996
ChairLong Range Planning Committee, American College of Occupational and Environmental Medicine
- 1995 - 1996
Past PresidentBylaws Committee, North Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1995 - 1996
MemberPublic Health Committee, Minnesota Medical Association
- 1995 - 1996
ChairEnvironmental Health Committee, Minnesota Medical Association
- 1995 - 1996
MemberLegislative Affairs Committee, Zumbro Valley Medical Society, Minnesota Medical Association
- 1995 - present
MemberScientific Programs Committee, Aerospace Medical Association
- 1994 - 2000
MemberAerospace Medical Association Council, Aerospace Medical Association
- 1994 - 1997
ChairAir Transport Committee, Aerospace Medical Association
- 1994 - 1996
MemberClinical Reviews Planning Committee, Mayo Clinic Rochester Committees
- 1994 - 1996
ChairEnvironmental Health Committee, Zumbro Valley Medical Society, Minnesota Medical Association
- 1994 - 1996
MemberExecutive Committee, Zumbro Valley Medical Society, Minnesota Medical Association
- 1994 - 1995
PresidentBylaws Committee, North Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1994 - present
MemberCommittee on Health Care Workers, International Commission on Occupational Health
- 1993 - 2000
MemberLong Range Planning Committee, American College of Occupational and Environmental Medicine
- 1993 - 1996
MemberEnvironmental and Occupational Health Team, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1993 - 1996
ChairCurriculum Committee, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1993 - 1996
ChairCurriculum Committee on The Patient, Physician and Society, Curriculum Committee, Mayo Medical School
- 1993 - 1996
MemberResidency Program Directors Council, American College of Preventive Medicine
- 1993 - 1996
MemberCentral Group on Educational Affairs, Association of American Medical Colleges
- 1993 - 1995
ChairNominating Committee, American College of Occupational and Environmental Medicine
- 1993 - 1994
MemberQuality Assurance Committee, Department of Internal Medicine
- 1993 - 1994
Vice PresidentExecutive Committee, North Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1993 - 1994
Vice ChairExecutive Council, Airline Medical Directors Association
- 1992 - 1996
HeadAviation Medicine Consulting Group, Section of Aviation Medicine, Division of Preventive, Occupational and Aerospace Medicine
- 1992 - 1996
MemberSubspecialty Training Committee, Mayo Clinic Rochester Committees
- 1992 - 1996
MemberPrimary Care Clinic Task Force, Mayo Graduate School of Medicine, Mayo Clinic College of Medicine and Science
- 1992 - 1996
MemberCEX Task Force, Mayo Graduate School of Medicine, Mayo Clinic College of Medicine and Science
- 1992 - 1996
MemberEducation Committee, Mayo Medical School, Mayo Clinic College of Medicine and Science
- 1992 - 1996
DelegateMayo Medical School, House of Delegates, Minnesota Medical Association
- 1992 - 1995
MemberMayo Environment Task Force, Mayo Clinic Rochester Task Forces
- 1992 - 1995
ChairScientific Committee, Medical Center Occupational Health Section, American College of Occupational and Environmental Medicine
- 1992 - 1994
Co-ChairCredentials Committee, American College of Occupational and Environmental Medicine
- 1992 - 1993
ChairFourth Year Curriculum Committee, Mayo Medical School, Mayo Clinic College of Medicine and Science
- 1992 - 1993
SecretaryExecutive Committee, North Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1992 - present
MemberState Government Affairs Committee, American College of Occupational and Environmental Medicine
- 1991 - 1998
MemberProfessional Air Transport Association
- 1991 - 1997
NCOEM Delegate to ACOEM House of DelegatesNorth Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1991 - 1996
MemberEnvironmental Health Committee, Minnesota Medical Association
- 1991 - 1995
MemberNominating Committee, American College of Occupational and Environmental Medicine
- 1991 - 1994
ChairPassenger Health Subcommittee, Aerospace Medical Association
- 1991 - 1994
MemberExecutive Council, Airline Medical Directors Association
- 1991 - 1992
ChairHistory of Medicine Society, Mayo Clinic Rochester Societies
- 1991 - 1992
Vice ChairScientific Committee, Medical Center Occupational Health Section, American College of Occupational and Environmental Medicine
- 1991 - 1992
TreasurerExecutive Committee, North Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1991 - 1992
RecorderExecutive Committee, North Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1991
SecretaryResearch Committee, Department of Internal Medicine
- 1990 - 1994
MemberEnvironmental Health Committee, Zumbro Valley Medical Society, Minnesota Medical Association
- 1990 - 1992
ChairResidency Advisory Committee, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1990 - 1992
Alternate DelegateZumbro Valley Medical Society, House of Delegates, Minnesota Medical Association
- 1990 - 1991
Vice ChairHistory of Medicine Society, Mayo Clinic Rochester Societies
- 1990 - present
MemberResidency Advisory Committee, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1990 - present
MemberInformatics Section, Computers in Occupational Medicine Section, American College of Occupational and Environmental Medicine
- 1990 - present
MemberMedical Center Occupational Health Section, American College of Occupational and Environmental Medicine
- 1989 - 1996
ChairEducation Committee, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1989 - 1996
MemberOccupational Medicine Consulting Group, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1989 - 1996
MemberWorkers Compensation Team, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1989 - 1996
MemberUndergraduate Education, Department of Internal Medicine
- 1989 - 1996
MemberGeneral Medical Training Committee, Department of Internal Medicine
- 1989 - 1996
MemberExecutive Committee, North Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1989 - 1994
MemberExecutive Committee, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1989 - 1993
MemberPractice Committee, Division of Preventive, Occupational and Aerospace Medicine, Department of Internal Medicine
- 1989 - 1991
MemberResearch Committee, Department of Internal Medicine
- 1989 - 1991
MemberRadiation Safety Committee, Mayo Clinic Rochester Committees
- 1989 - 1991
MemberRadioactive Drug Review Committee, Mayo Clinic Rochester Committees
- 1989 - 1991
Member-at-LargeExecutive Committee, North Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1989 - present
MemberAir Transport Committee, Aerospace Medical Association
- 1988 - 2004
Delegate to House of DelegatesMaricopa County Medical Society, Arizona Medical Association
- 1988 - 1997
MemberNorth Central Occupational and Environmental Medical Association, American College of Occupational and Environmental Medicine
- 1988 - 1996
MemberHistory of Medicine Society, Mayo Clinic Rochester Societies
- 1988 - 1996
MemberMinnesota Medical Association
- 1988 - 1996
MemberZumbro Valley Medical Society, Minnesota Medical Association
- 1988 - 1991
MemberOccupational Health Education Committee, International Commission on Occupational Health
- 1988 - present
MemberAmerican Medical Association
- 1988 - present
MemberAmerican Medical Association
- 1985 - 1986
ChairAlberta Provincial Board of Health
- 1984 - 1989
Board MemberInternational Association on Occupational Health in the Chemical Industry (MEDICHEM)
- 1983
Congress ChairXIth MEDICHEM Congress on Occupational Health in the Chemical Industry, Calgary, Alberta, 1983, International Association on Occupational Health in the Chemical Industry (MEDICHEM)
- 1982 - present
MemberInternational Commission on Occupational Health
- 1981 - 1984
National Representative for CanadaInternational Association on Occupational Health in the Chemical Industry (MEDICHEM)
- 1981 - present
MemberInternational Association on Occupational Health in the Chemical Industry (MEDICHEM)
- 1979 - 1996
MemberAlberta Provincial Board of Health
- 1979 - present
FellowAmerican College of Preventive Medicine
- 1977 - present
MemberAlberta Medical Association
- 1976 - 2003
MemberOccupational Medical Association of Canada
- 1976 - present
FellowAmerican College of Occupational and Environmental Medicine
- 1976 - present
FellowRoyal College of Physicians and Surgeons of Canada
- 1972 - 1975
MemberAmerican Medical Association
- 1969 - present
FellowAerospace Medical Association