- 2024Scientific Interest Committee, MemberPolish Parkinson Disease and Other Movement Disorders Society 
- 2024International Advisory Board MemberAD/PD and Related Neurological Disorders 
- 2021MemberSelection Jury for the Best Case Report Contest (BCRC), 6th McMaster International Review Course in Internal Medicine, McMaster University 
- 2021Committee MemberThe 15th International Conference On Alzheimer’s & Parkinson’s Diseases, AD/PD 
- 2018Course ChairCurrent Status of Clinical Practice in Movement Disorders, International Scientific Medical Conference; Current Status of Clinical Practice in Movement Disorders 
- 2018Plenary Session Co-ChairIII Congress of Polish Parkinson Disease and Other Movement Impairments and VII Meeting of Section of Extrapyramidal Disorders of the Polish Neurological Society 
- 2017International MemberThe 13th International Conference On Alzheimer’s & Parkinson’s Diseases, AD/PD™  
- 2016Committee MemberIX Congress of Polish Physicians from Abroad [IX Kongres Polonii Medycznej i II Swiatowy Kongres Lekarzy Polskich] 
- 2015Members Disease and Related Disorders, XXI World Congress on Parkinson 
- 2015Chairs Disease and Related Disorders, XXI World Congress on Parkinson 
- 2015s Disease and Related Disorders, XXI World Congress on Parkinson 
- 2015AppointeePrize Committee of the Annemarie Opprecht-Foundation 
- 2014 - presentMemberJapanese Society of Neurology 
- 2013ChairProceedings Committee, XX World Congress on Parkinson's Disease and Related Disorders 
- 2013Chairzgu], wyzwania i nadzieje & Projekt Poznania Ludzkiego Mo, Challenges and Hope & Human Brain Project [Sympozjum: Neurologia XXI Wieku 
- 2013Co-ChairSymposium 44: Genetics of Neurodegeneration 2, The 11th International Conference on Alzheimer's & Parkinson's Diseases, AD/PD 2013 
- 2013Co-ChairSymposium 22: Genetics of Neurodegeneration 1, The 11th International Conference on Alzheimer's & Parkinson's Diseases, AD/PD 2013 
- 2013MemberScientific Advisory Board, The 11th International Conference on Alzheimer's & Parkinson's Diseases, AD/PD 2013 
- 2013 - 2014MemberWorkgroup on the Section's Strategic Plan Committee, Movement Disorders Section, American Academy of Neurology 
- 2013 - presentMemberFinance Committee, International Society for Frontotemporal Dementias 
- 2012Scientific AdvisorWFN-APRD & NIMHANS 
- 2012Scientific AdvisorWFN-APRD & NIMHANS 
- 2011Committee ChairXIX World Congress on Parkinson's Disease and Related Disorders 
- 2011ChairpersonParallel Session: Genotypes and phenotypes: sporadic Parkinson's disease, XIX World Congress on Parkinson's Disease and Related Disorders 
- 2011Invited SpeakerParallel Session: Genotypes and phenotypes: sporadic Parkinson's disease, XIX World Congress on Parkinson's Disease and Related Disorders 
- 2011ChairParallel Session: Meet the Editors of Parkinsonism and Related Disorders, XIX World Congress on Parkinson's Disease and Related Disorders 
- 2011Invited SpeakerParallel Session: Meet the Editors of Parkinsonism and Related Disorders, XIX World Congress on Parkinson's Disease and Related Disorders 
- 2011Advisory Board Member10th International Conference on Alzheimer's & Parkinson's Diseases, AD/PD 2011 
- 2011Co-Chair10th International Conference on Alzheimer's & Parkinson's Diseases, AD/PD 2011 
- 2011MemberAd-hoc Task Force Botulinum Toxins, Pharmaceutical Formulary Committee - Mayo Clinic, Mayo Clinic Committees 
- 2011Meeting ParticipantAd-hoc Conference on Establishing Diagnostic Criteria for Perry Syndrome 
- 2011 - 2015CouncilorInternational Association of Parkinsonism and Related Disorders 
- 2011 - 2012CouncilorAssociation of Parkinsonsim and Related Disorders, World Federation of Neurology 
- 2011MemberPrize Committee, Annemarie Opprecht-Foundation, Lucerne, Switzerland 
- 2010Invited ParticipantNINDS- Induced Pluripotent Stem Cells Consortia Meeting, National Institutes of Health 
- 2010MemberTask Force for Biospecimen Use 
- 2010MemberInternal Advisory Committee, 7th International Conference on Frontotemporal Dementias 
- 2010MemberPhenotyping Subgroup, Essential Tremor Consortium meeting 
- 2010Session ChairBiomarkers for Lewy Body Disease, Pathway to Discovery and Validation Symposium, National Institute of Neurological Disorders and Stroke, National Institutes of Health 
- 2010Invited ParticipantBiomarkers for Lewy Body Disease, Pathway to Discovery and Validation Symposium, National Institute of Neurological Disorders and Stroke, National Institutes of Health 
- 2010Invited ParticipantiPSC Consortia Workshop, National Institute of Neurological Disorders and Stroke, National Institutes of Health 
- 2010Ad Hoc Abstract Reviewer7th International Conference on Frontotemporal Dementias 
- 2010 - presentMemberFlorida Medical Association 
- 2009MemberOrganizing Committee, XVIII WFN World Congress on Parkinson's Disease and Related Disorders, Miami Beach, Florida 
- 2009Advisory Board MemberEuropean Project on Mendelian Forms of Parkinson's Disease; Grant agreement no: 241791, Seventh Framework Programme, Health, Theme: Rare neurological disease, Project acronym: MEFOPA, European Union Funding Agency 
- 2009Co-ChairParallel Session on Etiology and Pathophysiology of PD and DLB, 9th International Conference AD/PD 2009, Prague, Czech Republic 
- 2009Member9th International Conference AD/PD 2009, Prague, Czech Republic 
- 2009MemberScientific Advisory Board, 9th International Conference AD/PD 2009, Prague, Czech Republic 
- 2009 - 2011TreasurerAssociation of Parkinsonsim and Related Disorders, World Federation of Neurology 
- 2009FounderAssociation of Parkinsonsim and Related Disorders, World Federation of Neurology 
- 2009FounderFoundation of Parkinsonism and Related Disorders, World Federation of Neurology 
- 2009 - presentTreasurerFoundation of Parkinsonism and Related Disorders, World Federation of Neurology 
- 2008Session ChairScientific Session: Selected Oral Presentations, 6th International Conference on Frontotemporal Dementias, Rotterdam, The Netherlands 
- 2008Member6th International Conference on Frontotemporal Dementias, Rotterdam, The Netherlands 
- 2008 - presentHonorary MemberPolish Neurological Society 
- 2008MemberSpheramine Genetics Advisory Panel, Bayer Schering Pharma 
- 2008Ad Hoc Abstract Reviewer61st Annual Meeting of American Academy of Neurology 
- 2008Ad Hoc Grant ReviewerOffice of Research & Development Program, Cooperative Studies Program, U.S. Department of Veterans Affairs 
- 2008MemberInternational Advisory Board, 6th International Conference on Frontotemporal Dementias, Rotterdam, The Netherlands 
- 2007MemberXVII WFN World Congress on Parkinson's Disease and Related Disorders, Amsterdam, The Netherlands 
- 2007MemberScientific Program Executive Committee, XVII WFN World Congress on Parkinson's Disease and Related Disorders, Amsterdam, The Netherlands 
- 2007MemberScientific Advisory Board, XVII WFN World Congress on Parkinson's Disease and Related Disorders, Amsterdam, The Netherlands 
- 2007Session Co-ChairOral Presentations: Progranulinopathies, 8th International Conference AD/PD 2007, Salzburg, Austria 
- 2007Member8th International Conference AD/PD 2007, Salzburg, Austria 
- 2007 - 2009MemberAward Committee for John A. Beals Award for Medical Research & G. Shahin Award for Research by a Physician in Training in Duval County, Duval County Medical Society 
- 2007 - 2009TreasurerResearch Committee on Extrapyramidal Diseases, World Federation of Neurology 
- 2007MemberScientific Advisory Board, 8th International Conference AD/PD 2007, Salzburg, Austria 
- 2007MemberPrize Committee, Annemarie Opprecht-Foundation, Lucerne, Switzerland 
- 2006MemberParkinson's Disease and Other Movement Disorders. New Advances in Understanding and Treatment. Mayo Clinic Faculty Course Scientific Committee 
- 2005 - presentAdvisory Board MemberSoutheast Parkinson Disease Association, Inc., Chapter of the National Parkinson Foundation serving the Central and Northern Florida areas 
- 2005 - presentMemberSoutheast Parkinson Disease Association, Inc., Chapter of the National Parkinson Foundation serving the Central and Northern Florida areas 
- 2005Member16th International Congress on Parkinson's Disease and Related Disorders 
- 2005MemberWFN Research Group on Parkinsonism and Related Disorders Executive Committee, 16th International Congress on Parkinson's Disease and Related Disorders 
- 2005MemberScientific Advisory Board Committee, 16th International Congress on Parkinson's Disease and Related Disorders 
- 2005MemberEthics Committee, 16th International Congress on Parkinson's Disease and Related Disorders 
- 2005MemberBoard of Governors, Research Committee, Mayo Clinic Florida Committees 
- 2005MemberAward Committee for John A. Beals Award for Medical Research & G. Shahin Award for Research by a Physician in Training in Duval County, Duval County Medical Society 
- 2003 - presentLiaison RepresentativeAmerican Academy of Neurology 
- 2002 - presentMemberAcademic Appointments and Promotions Committee, Department of Neurology 
- 2002 - presentMemberAcademic Appointments and Promotions Committee, Department of Neurology 
- 2002 - presentMemberAcademic Appointments and Promotions Committee, Department of Neurology 
- 2002 - presentFellow MemberAmerican Academy of Neurology 
- 2001 - 2009MemberResearch Committee on Extrapyramidal Diseases, World Federation of Neurology 
- 2001 - 2009MemberWorld Federation of Neurology 
- 2001 - 2009MemberExecutive Committee, Research Committee on Extrapyramidal Diseases, World Federation of Neurology 
- 2001 - 2009MemberResearch Group on Parkinson's Disease and Related Disorders, World Federation of Neurology 
- 2001 - presentMemberDuval County Medical Society 
- 2000 - presentMemberResearch Committee, Department of Neurology 
- 1999MemberProfessorship Selection Committee for the Cora Kanow Professorship, Mayo Clinic Rochester Committees 
- 1998 - presentMemberSmith Fellowship Program Reward Committee, Mayo Clinic Florida Committees 
- 1998 - presentMemberOutpatient Service, Mayo Clinic Florida Committees 
- 1996 - presentMemberAmerican Neurological Association 
- 1996 - 1998MemberMedical Ethics Committee, University of Nebraska Medical Center 
- 1996 - 1998MemberEmerging Ethical Issues Subcommittee, Medical Ethics Committee, University of Nebraska Medical Center 
- 1995 - 1996MemberQuality Assurance Committee, University of Nebraska Medical Center 
- 1994 - 1998LiaisonSelf-Assessment Examination Training, American Association of Neuromuscular and Electrodiagnostic Medicine 
- 1993 - presentFellowAmerican Association of Neuromuscular and Electrodiagnostic Medicine 
- 1993 - 1995MemberSpecial Procedure Laboratory Team, Department of Internal Medicine, University of Nebraska Medical Center 
- 1992 - 2002Active MemberAmerican Academy of Neurology 
- 1992 - presentMemberMovement Disorder Society 
- 1991 - 1993Associate MemberAmerican Association of Neuromuscular and Electrodiagnostic Medicine 
- 1991 - 1992Clinical Associate MemberAmerican Academy of Neurology 
- 1991 - presentMayo Clinic Alumni Association, Mayo Clinic College of Medicine and Science, Department of Education Administration 
- 1991 - presentMemberMayo Clinic Alumni Association, Mayo Clinic College of Medicine and Science, Department of Education Administration 
- 1991 - presentMemberAmerican Clinical Neurophysiology Society 
- 1987 - 1991Junior MemberAmerican Academy of Neurology 
- 1987 - presentMemberAmerican Academy of Neurology 
-  MemberResearch Committee, Mayo Clinic Florida Committees