- 2019 - 2020Advisory Panel MemberAmneal Pharmaceuticals 
- 2019Advisory Panel MemberAcorda Therapeutics 
- 2019Advisory Panel MemberAxovant Gene Therapies 
- 2019 - presentSecretary-electInternational Parkinson and Movement Disorder Society 
- 2019 - presentMemberDementia Nomenclature Initiative Steering Committee, International Parkinson and Movement Disorders Society 
- 2018MemberStrategic Planning Committee, International Parkinson and Movement Disorder Society 
- 2018 - presentMemberInternational RBD Study Group 
- 2017 - 2019MemberInternational Executive Committee, International Parkinson and Movement Disorder Society 
- 2017 - 2018Advisory Panel MemberNeurocrine Biosciences 
- 2017 - 2018Advisory Panel MemberScion Medical Technologies 
- 2017 - 2018Advisory Panel MemberSunovion Pharmaceuticals, Inc. 
- 2017Advisory Panel MemberAcorda Therapeutics 
- 2017Advisory Panel MemberAdamas Pharmaceuticals 
- 2017Advisory Panel MemberExtera Partners LLC 
- 2017Advisory Panel MemberMinerva Neurosciences, Inc. 
- 2017Advisory Panel MemberRevance Therapeutics, Inc. 
- 2017 - presentChairIndustry Education, International Parkinson and Movement Disorder Society 
- 2016 - 2020Advisory Panel MemberJazz Pharmaceuticals 
- 2016 - 2018Advisory Panel MemberAcadia Pharmaceuticals 
- 2016 - 2017Co-ChairNeurology Access and Finance Subcommittee, Department of Neurology 
- 2016Advisory Panel MemberAcorda Therapeutics 
- 2016Advisory Panel MemberAdamas Pharmaceuticals 
- 2016Advisory Panel MemberCynapsus Therapeutics Inc. 
- 2015 - 2019MemberBy-Laws Committee, International Parkinson and Movement Disorder Society 
- 2015 - 2017ChairEducation Committee, International Parkinson and Movement Disorder Society 
- 2015 - 2017MemberLearning Module System Committee, International Parkinson and Movement Disorder Society 
- 2015MemberStrategic Planning Committee, International Parkinson and Movement Disorder Society 
- 2015MemberCongress Scientific Program Committee, International Parkinson and Movement Disorder Society 
- 2015Advisory Panel MemberImpax 
- 2015Advisory Panel MemberIpsen 
- 2015 - presentMemberTremor Research Group 
- 2014 - 2017MemberLeadership Task Force, Movement Disorder Society 
- 2014Advisory Panel MemberAbbVie 
- 2014Advisory Panel MemberTEVA 
- 2014Advisory Panel MemberAcadia Pharmaceuticals 
- 2014Advisory Panel MemberEli Lilly/Medtronic 
- 2014 - presentMemberTask Force on Dystonia, Movement Disorder Society 
- 2013 - 2015Co-ChairEducation Committee, Movement Disorder Society 
- 2013Advisory Panel MemberXenoport 
- 2013Advisory Panel MemberNovartis 
- 2013 - presentMemberDefining PD Task Force, Movement Disorder Society 
- 2012FellowAmerican Medical Association 
- 2012Advisory Panel MemberImpax 
- 2012 - presentVice ChairMovement Disorder Section, American Academy of Neurology 
- 2011 - 2017MemberEducation Committee, International Parkinson and Movement Disorder Society 
- 2011 - 2017Advisory Panel MemberLundbeck Pharmaceuticals 
- 2011 - 2016MemberToxins 2012 Clinical Subcommittee 
- 2011 - 2015Co-ChairBiomarkers Committee, Parkinson Study Group 
- 2011MemberClinician's Engaged in Research Committee 
- 2011Advisory Panel MemberTEVA 
- 2011 - presentMemberInternational Neurotoxin Association 
- 2011 - presentMemberEducation Committee, Movement Disorder Society 
- 2010 - 2016Advisory Panel MemberMerz Pharmaceuticals 
- 2010Grant ReviewerNational Institutes of Health 
- 2009 - 2015MemberScientific Advisory Board, Bachmann-Strauss Dystonia & Parkinson Foundation, Inc. 
- 2009 - 2010Advisory Panel MemberEli Lilly/Medtronic 
- 2009Advisory Panel MemberBiogen Idec 
- 2008 - 2017MemberEducation Committee, Department of Neurology 
- 2008 - 2010Advisory Panel MemberIpsen 
- 2008 - 2010Advisory Panel MemberMerck Serono Pharmaceuticals 
- 2008Ad Hoc Grant ReviewerNational Institutes of Health 
- 2007 - 2011MemberBy-Laws Committee, Movement Disorder Society 
- 2007Advisory Panel MemberNovartis 
- 2007Advisory Panel MemberBoehringer 
- 2007 - presentMemberDistinguished Investigator Selection Committee, Mayo Clinic Arizona Committees 
- 2006 - 2010Advisory Panel MemberAllergan 
- 2006 - 2007Advisory Panel MemberVernalis 
- 2006Advisory Panel MemberBoehringer 
- 2006 - presentMemberExecutive Committee, Dystonia Study Group 
- 2005 - 2006MemberIndustrial Relations Committee, Movement Disorder Society 
- 2005Advisory Panel MemberNovartis 
- 2005Ad Hoc Grant ReviewerNational Institutes of Health 
- 2004 - 2005MemberBotulinum Toxin Workshops, Course Development and Planning Committee, Movement Disorder Society 
- 2004Topic ChairMovement Disorders, Scientific Session, American Academy of Neurology 
- 2004Advisory Panel MemberPharmacia 
- 2004Advisory Panel MemberBoehringer 
- 2004Advisory Panel MemberValeant 
- 2004 - presentFellowAmerican Academy of Neurology 
- 2003 - 2006MemberCredentialing Committee, Parkinson Study Group 
- 2003 - 2004MemberCourse Development and Planning Committee for Update on the Management of Motor Complications in PD, Movement Disorder Society 
- 2003Co-DirectorClinical Studies Unit, Mayo Clinic Arizona Committees 
- 2003MemberFoundation Public Education Committee, American Academy of Neurology 
- 2003MemberEditorial Panel, Parkinson's Disease Website, American Academy of Neurology 
- 2002Advisory Panel MemberNovartis 
- 2001 - 2008ChairDivision of Movement Disorders, Department of Neurology 
- 2001 - 2005MemberConflict of Interest Task Force, Mayo Clinic Task Forces/Work Groups 
- 2001 - 2003Vice ChairResearch Committee, Executive Operations Team - Arizona, Mayo Clinic Arizona Committees 
- 2001 - 2003HeadHuman Subjects Research, Research Committee, Executive Operations Team - Arizona 
- 2001 - 2003MemberClinical Practice Subcommittee, Clinical Practice Committee, Department of Neurology 
- 2001 - 2003MemberClinical Operations Subcommittee, Clinical Practice Committee - Arizona, Executive Operations Team - Arizona 
- 2001 - 2003Advisory Panel MemberDystonia/Spasticity, Movement Disorder Section, American Academy of Neurology 
- 2001 - 2003MemberAmerican Academy of Neurology/Movement Disorder Society Dystonia/Spasticity Advisory Panel 
- 2001 - 2002MemberNominating Committee, Parkinson Study Group 
- 2001Advisory Panel MemberPharmacia 
- 2000 - 2008MemberExecutive Committee, Department of Neurology 
- 2000 - 2005Abstract ReviewerAmerican Academy of Neurology 
- 2000 - 2005ChairpersonScientific Session, American Academy of Neurology 
- 2000 - 2003MemberResearch Committee, Executive Operations Team - Arizona, Mayo Clinic Arizona Committees 
- 1999 - 2008ChairClinical Practice Committee, Department of Neurology 
- 1999 - 2007ChairpersonBy-Laws Subcommittee, Dystonia Study Group 
- 1999 - 2005MemberMedical Advisory Board, Restless Legs Syndrome Foundation 
- 1999 - 2002Advisory Panel MemberAthena Neurosciences/Elan 
- 1999Grant ReviewerThe Wellcome Trust, Wellcome Foundation 
- 1998 - 2009Advisory Panel MemberSmith Kline Beecham/GlaxoSmithKline 
- 1998 - 2004MemberDystonia Task Force, WE MOVE 
- 1998 - 2001MemberMedical-Industry Relations Committee, Mayo Clinic Committees 
- 1998 - presentMemberAmerican Neurological Association 
- 1998 - presentMemberInternational Restless Legs Syndrome Study Group 
- 1997MemberFacilities Planning Practice Integration Task Force, Mayo Clinic Arizona Task Forces 
- 1997ReviewerScientific Session, American Academy of Neurology 
- 1997Advisory Panel MemberAbbott Laboratories 
- 1997 - presentMemberParkinson Study Group 
- 1997 - presentMemberHuntington Study Group 
- 1996 - presentMemberDystonia Study Group 
- 1995 - 2008MemberClinical Practice Committee, Department of Neurology 
- 1995 - 2001Executive Board MemberMovement Disorder Section, American Academy of Neurology 
- 1995 - 2001ChairpersonBy-Laws Subcommittee, Movement Disorder Section, American Academy of Neurology 
- 1995 - 2001ChairpersonNomination Subcommittee, Movement Disorder Section, American Academy of Neurology 
- 1995 - 1997MemberArizona Carrier Advisory Committee, Medicare, Blue Cross/Blue Shield 
- 1994 - 2004Joint DirectorMovement Disorders Fellowship, Department of Neurology 
- 1993 - 1995MemberSpace and Building Committee, Mayo Clinic Arizona Committees 
- 1993 - 1995MemberEducation Committee, Department of Neurology 
- 1992 - 1998MemberResearch Committee, Department of Neurology 
- 1992 - 1995MemberDatabase Committee, Department of Neurology 
- 1992 - presentMemberArizona Medical Association 
- 1991 - 2005MemberAmerican Medical Association 
- 1991 - 2005MemberAssociation for Research in Nervous and Mental Diseases 
- 1990 - presentMemberMovement Disorder Society 
- 1987 - 1991MemberPennsylvania Medical Society 
- 1987 - presentMemberAmerican Academy of Neurology 
- 1984 - 1990MemberAmerican Society for Pharmacology and Experimental Therapeutics