About - Officers

William Feldner, DO, FAOASM

William Feldner, DO, FAOASM - Board Chair
American Osteopathic Academy of Sports Medicine

Dr. Feldner is Board Certified in Family Medicine and Sports Medicine.  He is a Past President of the American Osteopathic Academy of Sports Medicine and is on the editorial board of the Clinical Journal of Sport Medicine, the leading Sports Medicine Journal in the US as well as internationally.  He is Vice Chairman for the Joint Commission for Sports Medicine and Science and currently serves as team physician for Lindenwood University and USA Volleyball.  He has travelled to Thailand, Czech Republic and Mexico, providing care for the Women’s Junior National Team as they competed in Continental and World Championships.  He is a certified physician with Fédération Internationale de Volleyball.  Over the years he has cared for athletes of all levels, from recreational to professional and Olympic athletes.

Jim Griffith, MBA, CAE - Vice Chair

Jim Griffith, MBA, CAE - Vice Chair
American Medical Society for Sports Medicine
Jim Griffith has served as the Executive Director for the American Medical Society for Sports Medicine since 2011. He previously worked for the American Academy of Family Physicians and prior to that served for a decade as the Executive Director of a 25,000 member men’s international fraternity. His 20+ years’ experience in association management followed three years as a sports journalist and editor. He has served on eight non-profit Boards of Directors (including serving as President/Chairman of three of them) and multiple leadership roles within his church. He holds a bachelor's degree in journalism from the University of Missouri, an MBA from Baker University and earned his CAE in 2005. He is based out of Leawood, Kan.

Jonathan Halperin, MD

Jonathan Halperin, MD - Executive Advisor
American Academy of Physical Medicine and Rehabilitation

Jonathan S. Halperin M.D. is the Chief of Physical Medicine and Rehabilitation at Sharp Rees -Stealy Medical Group in San Diego. He is board certified in Physical Medicine and Rehabilitation with a subspecialty certification in Sports Medicine in both the USA (CAQ-ABMS) and Canada ( DipSportMed CASEM). He has a certification in MSK ultrasound (RMSK) from the ARDMS.

He specializes in providing care for patients with non-operative sports, musculoskeletal and spine conditions. He obtained his medical degree from Queen’s University in Kingston, Ontario Canada. He completed his residency in PM&R at Loma Linda University Medical Center. His main areas of interest are in sports and musculoskeletal medicine, applications of diagnostic and interventional musculoskeletal ultrasound, preventative and regenerative musculoskeletal care, and medical education.

He is an avid skier, surfer and recreational cyclist. He has worked as a medical volunteer at the Salt Lake City Paralympics in 2002 and the Vancouver Olympic games in 2010. He is an active member of the Canadian National Alpine ski team medical group and has provided care for Canada’s Olympic ski team since 1985.

David Saddler

David Saddler - Executive Director, National Athletic Trainers Association (NATA) - Board Member

Previously serving as associate executive director, programs and services, where he oversaw departments and activities internal to NATA. Saddler is an association management veteran with more than 20 years of experience. He has served in executive leadership positions for organizations serving the transportation and electronic security industries. He has managed all facets of associations, from finance to public affairs.

Saddler earned a Bachelor of Arts degree from La Salle University in Philadelphia. He is currently pursuing the Certified Association Executive (CAE) designation. Saddler resides in Frisco, Texas with his wife Claudia and teenage sons Brandon and Kyle.


Jonathan N. Metzler, Ph.D., CMPC

Jonathan N. Metzler, Ph.D., CMPC - Board Member

Dr. Jon Metzler is Director of Human Performance for Magellan Federal, a subsidiary of Magellan Health. In this role, Dr. Metzler leads development of readiness and resilience capabilities that help organizations improve wellbeing, work-life flow and productivity of their leaders and teams. Among his responsibilities are coaching innovations, strategic partnerships, as well as recruitment, retention, and empowerment of a highly specialized staff of Cognitive Performance Experts. He is a Past President of the Association for Applied Sport Psychology (AASP) and served on the American Psychological Association’s (APA) Coalition for the Psychology of High Performance. He currently serves as Fellow Member of AASP’s Certification Council and the APA’s Exploratory Committee on Applied Psychology. As a Certified Mental Performance Consultant, Jon has extensive experience providing direct performance psychology consultation to teams and athletes representing many different sports of various competitive levels including intercollegiate athletes, Olympians, Paralympians, and professional athletes. He holds three bachelor’s degrees from Concordia University – Portland, a MA in Sport Psychology from University of North Carolina at Chapel Hill, and a PhD in Kinesiology from The Pennsylvania State University.

Eric Morse

Eric Morse - Board Member

Dr. Eric Morse is an Addiction and Sports Psychiatrist. Dr. Morse helps people recover from many addictions and mental illnesses. Dr. Morse is a sports psychiatrist who works with professional and college athletes and teams. He has been the Sports Psychiatrist for NC State since 2006. He specializes in a large variety of performance difficulties. Dr. Morse is a Past President of the International Society for Sports Psychiatry and the Associate Editor for the Journal of Clinical Sport Psychology. Before NC State, Dr. Morse worked for UNC, UMBC, University of Maryland, and Baltimore Orioles. Dr. Morse has volunteered his time for the US Olympic Team and has led substance abuse treatment programs for professional leagues.


Kristen Dieffenbach

Kristen Dieffenbach – Board Member

Kristen Dieffenbach is the director of the Center for Applied Coaching and Sport Sciences at West Virginia University and a professor in the School of Sport Sciences.  She is the executive director of the United States Center for Coaching Excellence, a Fellow in the Association of Applied Sport Psychology, and a graduate of the NSSU Coach Developer Academy.  She has been a professional endurance sport coach and Certified Mental Performance Consultant (CMPC) and educational consultant for athletes, coaches, and teams for over 20 years working with developmental through Olympic level athletes, coaches, and organizations. Although most of her work currently is in support of coaching education and coach development systems, she also still coaches at the developmental through elite levels. Her research interests focus on coach developer training, coaching and professionalism, and supporting athlete to coach transitions.


Ted Forcum, DC, DACBSP, CES, PES, CSCS - Board Member

Ted Forcum, DC, DACBSP, CES, PES, CSCS - Director of Sponsorship
American Chiropractic Association Council on Sports Injuries & Physical Fitness

Dr. Forcum is a Diplomate of the American Chiropractic Board of Sports Physicians (DACBSP), Internationally Certified Chiropractic Sports Practitioner (ICCSP), NSCA Certified Strength and Conditioning Specialist (CSCS), NASM Certified Exercise Specialist (CES) and Performance Exercise Specialist (PES).

He teaches postgraduate programs on soft tissue treatment, sports injuries and the biomechanics. The American Chiropractic Association Council on Sports and Physical Fitness has awarded Dr. Forcum the 1994-95 and 2004 Sports Chiropractor of the Year Award.

Dr. Forcum is the team chiropractor for the Portland Winterhawks Western Hockey League Team. He was medical staff for the 2015 USA Track and Field World Championships, 2008 Beijing US Olympic Team Chiropractic, and 2007 Rio de Janeiro US Pan American Team. He has worked as an event physician at the U.S Track and Field Olympic Trials and National Championships, U.S. Taekwondo Championships, US Triathlon National Championships, World Veteran’s Games, Nike World Masters Games, US Soccer Festival, World Canoe/Kayak Championships and US Figure Skating Championships. Dr. Forcum has worked as a staff chiropractor for the PGA Tour and Champions PGA Tour, and the Portland Timbers Major League Soccer Club.  Dr. Forcum is Past President of the American Chiropractic Association Council on Sports and Physical Fitness (2008-2010) and currently serves as their advisor. Dr. Forcum currently serves on the board of director’ for the Joint Commission on Sports Medicine and Science, and is in private practice in Beaverton, Oregon.

Administration and Meeting Support

Rita Yates

Rita Yates – Executive Director
American Academy of Podiatric Sports Medicine 
3121 NE 26th Street
Ocala, FL  34470
E-mail: ritayates2@aol.com

Susan Rees - Meeting Support
American Osteopathic Academy of Sports Medicine



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