- 2015 - present
MemberInternational Society for Human and Animal Mycology
- 2015 - present
PresidentCoccidioidomycosis Study Group
- 2014 - present
MemberWater Safety Committee, Southern Arizona Veterans Affairs Health Care System
- 2013 - 2015
President-ElectCoccidioidomycosis Study Group
- 2012 - present
ChairAntibiotic Stewardship Subcommittee, Southern Arizona Veterans Affairs Health Care System
- 2011 - 2014
MemberPlanning Committee, American College of Physicians
- 2010 - 2011
MemberHIV Employee Education System Planning Committee, Veterans Administration
- 2010 - present
Subject Group LeaderInvasive Mycoses, Guidelines for Prevention and Treatment of Opportunistic Infections in HIV-Infected Adults and Adolescents, NIH/CDC/IDSA
- 2009 - present
ChairInfection Control Committee, Southern Arizona Veterans Affairs Health Care System
- 2008 - present
MemberInvasive Fungal Infections, Faculty of 1000
- 2006 - 2008
Panel LeaderNon-Candida Fungal Infections, Guidelines on the Prevention and Treatment of Opportunistic Infections During HIV Infection Committee, DHHS-IDSA
- 2005
MemberCollege of Medicine, University of Arizona
- 2003 - 2017
MemberHIV Technical Advisory Group, Department of Veterans Affairs
- 2003 - 2007
MemberSARS Working Group, Department of Veterans Affairs
- 2003 - 2006
ChairmanPharmacy and Therapeutics Committee, Southern Arizona Veterans Affairs Health Care System
- 2003 - 2006
MemberVISN 18 Pharmacy Benefits Management Working Group, Department of Veterans Affairs
- 2001 - 2009
MemberPharmacy and Therapeutics Committee, Southern Arizona Veterans Affairs Health Care System
- 2000 - 2002
PresidentVA Society for Practitioners of Infectious Diseases (VASPID)
- 2000 - 2002
Workgroup MemberGuidelines for the Prevention of AIDS-Related Opportunistic Infections, Infectious Disease Society of America
- 2000 - present
MemberPromotion and Tenure Committee, Department of Medicine, University of Arizona
- 1999 - 2001
Advisory Board MemberBiomedical Research Foundation of Southern Arizona
- 1999 - 2000
MemberHouse Staff Committee, Department of Medicine, University of Arizona
- 1998 - 2003
ChairmanMedicine and Primary Care Quality Management Committee, Southern Arizona Veterans Affairs Health Care System
- 1998 - 2000
President-ElectVA Society for Practitioners of Infectious Diseases (VASPID)
- 1998 - 1999
MemberPrevention of Opportunistic Infections Working Group, United States Public Health Service (USPHS) and Infectious Disease Society of America (IDSA)
- 1997 - 1999
PreceptorLongitudinal Clinical Curriculum, College of Medicine, University of Arizona
- 1997
MemberHIV Physician Selection Committee, Department of Medicine, University of Arizona
- 1997
MemberAd Hoc Committee on MICU Infections, Southern Arizona Veterans Affairs Health Care System
- 1997
MemberEthical Issues in Occupational Exposure to HIV Working Group, Department of Veterans Affairs
- 1996 - 1998
TreasurerVA Society for Practitioners of Infectious Diseases (VASPID)
- 1996 - 1997
ChairmanLiaison Committee on Medical Education Institutional Self Study, College of Medicine, University of Arizona
- 1996 - 1997
ChairmanMedical Service Quality Assurance Committee, Southern Arizona Veterans Affairs Health Care System
- 1996 - present
MemberVA Society for Practitioners of Infectious Diseases (VASPID)
- 1994 - 1998
MemberHuman Subjects Committee, University of Arizona
- 1994 - 1998
MemberHIV Committee, University of Arizona
- 1994 - 1996
Board MemberAmerican Lung Association of Arizona, American Lung Association
- 1994 - 1996
ChairmanResearch Committee, American Lung Association of Arizona, American Lung Association
- 1994 - 1995
MemberAdmissions Committee, Department of Microbiology and Immunology, University of Arizona
- 1994 - 1995
ChairmanPharmacology Course Review Subcommittee, College of Medicine, University of Arizona
- 1994 - 1995
MemberPrevention of Opportunistic Infections Working Group, United States Public Health Service (USPHS) and Infectious Disease Society of America (IDSA)
- 1993 - 1996
ChairmanHIV Subcommittee, VA Society for Practitioners of Infectious Diseases (VASPID)
- 1993 - 1995
Co-Director4th-Year Elective, Care of HIV-Infected Patients, College of Medicine, University of Arizona
- 1993 - 1994
Medical AdviserTucson SHANTI Foundation
- 1993
Panel MemberRyan White/NCAP Grants, Tucson Community Foundation
- 1992 - 1993
ChairmanDirectors Task Force on Research Service Funding Shortfall, Southern Arizona Veterans Affairs Health Care System
- 1992 - 1996
MemberAIDS Education Project, College of Medicine, University of Arizona
- 1992 - 1995
MemberResearch & Development Committee, Southern Arizona Veterans Affairs Health Care System
- 1992 - 1993
ChairmanPediatric Clerkship Review Subcommittee, College of Medicine, University of Arizona
- 1992
MemberCurriculum Committee, College of Medicine, University of Arizona
- 1991 - 1994
MemberHands and Hearts Award Selection Committee, Southern Arizona Veterans Affairs Health Care System
- 1991 - 1992
ChairmanResearch Service Space Committee, Southern Arizona Veterans Affairs Health Care System
- 1991
MemberPima County Ryan White Fund Allocation for HIV Committee
- 1990 - 1993
MemberWestern Region Veterans Peer Review Organization, Department of Veterans Affairs
- 1990
MemberNeurology Clerkship Review Subcommittee, College of Medicine, University of Arizona
- 1990
FellowAmerican College of Physicians
- 1990
FellowInfectious Disease Society of America
- 1989 - 1997
MemberMedical Service Quality Assurance Committee, Southern Arizona Veterans Affairs Health Care System
- 1988 - 1989
MemberResearch & Treatment Development Study Group, Arizona's Governor's Task Force on AIDS
- 1988
MemberComputer Committee, Southern Arizona Veterans Affairs Health Care System
- 1987 - 2017
PreceptorSecond-Year Medical Students, College of Medicine, University of Arizona
- 1987 - 1990
ChairmanAIDS Resource Committee, Southern Arizona Veterans Affairs Health Care System
- 1987 - 1990
Physician AdvisorDistrict 24 MEDIPRO, Veterans Administration
- 1986 - 1994
MemberHouse Staff Committee, Department of Medicine, University of Arizona
- 1986 - 1992
MemberRecords Committee, Southern Arizona Veterans Affairs Health Care System
- 1986 - present
MemberDivision F (Mycology), American Society for Microbiology
- 1986 - present
MemberInternational AIDS Society
- 1986 - present
MemberCoccidioidomycosis Study Group
- 1985 - 1991
MemberInfection Control Committee, Southern Arizona Veterans Affairs Health Care System