American Academy of Physical Medicine and Rehabilitation., 1991 - present Fellow
1996 - 1998 Research Special Interest Group
2004 - 2006 Steering Committee for Per Peripheral Neuropathy
guidelines task force
American Association of Neuromuscular and Electrodiagnostic Medicine, 1993 - Present Fellow
1995 - 1996 Professional Practice Committee
1996 - 2002 Research Committee
2002 - 2005 Chairman, Research Committee
2005 - 2011 Governing Board
2010 - 2011 President
Association of Academic Physiatrists, 1991 - present Diplomat
2001 - present Council of Researchers, Member and Vice President
International Injury Scaling Committee, Washington, DC
Amputee Coalition of America and the Johns Hopkins University Bloomberg School of Public Health,, Advisory board Centers for Disease Control funded project. Primary investigator, Ellen J. MacKenzie, Ph.D., “PALS: Promoting Amputee Life Skills”.
Centers for Medicare and Medicaid Services, Advisory Panel: Special Payment Provisions and Requirements for Custom Fabricated Orthotics and Prosthetics.
Maryland Health Resources Planning Commission, Technical Advisory Committee on Subacute Rehabilitation.
Northwest Strategy Response Committee, Froedtert Memorial Lutheran Hospital.