Scientific & Medical Advisory Committee

Chair, Physical Medicine and Rehabilitation

David M. Crandell, MD
Medical Director
Amputee Program
Spaulding Rehabilitation Hospital
Boston, MA

Podiatry & Amputation Prevention

David G. Armstrong, DPM, MD, PhD
Professor of Surgery
University of Arizona College of Medicine
Tucson, AZ

Orthotics and Prosthetics

Bruce “Mac” McClellan, CPO, LPO, FISPO, FAAOP
Prosthetic-Orthotic Associates of East Texas, Inc.
Tyler, TX

Troy Farnsworth, CP, FAAOP
Upper Extremity Prosthetic Program
Hanger Clinic
San Antonio, TX

Prosthetic Research

M. Jason Highsmith, PT, DPT, PhD, CP, FAAOP
Assistant Director, Research and Surveillance
Extremity Trauma and Amputation Center of Excellence
U.S. Department of Defense
Department of Veterans Affairs
Tampa, FL

Community Programs

David J. Dunville
Amputee Support Coordinator
H-Care, Hurley/Binson’s Medical Equipment, Inc.
President, Amputee Firefighters Association
Certified Peer Visitor
Flint, MI

Pediatric Rehabilitation/Limb Difference

Colleen Coulter, PT, DPT, PhD, PCS
Team Leader of Limb Deficiency Program
Children’s Healthcare of Atlanta
Prosthetics and Orthotics Department
Atlanta, GA

Physical Therapy

Carol A. Miller, PT, PhD, GCS
Professor & Director of Curriculum and Instruction
Department of Physical Therapy
Philadelphia College of Osteopathic Medicine – Georgia Campus
Suwanee, GA

Occupational Therapy

Shawn Swanson Johnson, OTR/L
Occupational Therapist
SSJ Rehab Services, PLLC
Houston, TX


Kara Couch, MS, CRNP, CWS
Nurse Practitioner
Department of Vascular Surgery
George Washington University Hospital
Washington, D.C.


Samuel H. Johnson, PharmD, MPH
Clinical Pharmacist
Durham Regional Hospital
Durham, NC

Liaison, Amputee Coalition of Canada

Nancy Dudek, MD
Associate Professor
University of Ottawa
Division of Physical Medicine and Rehabilitation

Military/Prosthetic Research

Troy A. Turner, MBA
Research Portfolio Manager
Advanced Prosthetics and Neural Engineering
Telemedicine and Advanced Technology Research Center (TATRC)
U.S. Army Medical Research and Materiel Command
Frederick, MD

Amputee Coalition Medical Director

Terrence P. Sheehan, MD
Medical Director at Adventist Rehab Hospital of Maryland
Rockville, MD

Amputee Coalition President and CEO

Jack Richmond, CPOA
Chattanooga, TN

Amputee Coalition Chief Policy & Programs Officer

Dan Ignaszewski
Amputee Coalition
Knoxville, TN