Orthopedic Doctors & Surgeons

At Orthopaedic and Spine Center (OSC), our physicians, physician assistants and nurse practitioner are highly trained to make sure your care is second to none. We have full-time fellowship-trained specialists on staff incorporating the latest medical advancements in surgical and non-surgical procedures. Our Orthopedic, Interventional Pain Management,and Clinical Psychology specialists will help you return to the activities you enjoy.

Learn more about our physicians and physician assistants by clicking on the names below.


Boyd W. Haynes, III, M.D.

Dr. Boyd Haynes is a Sports Medicine fellowship-trained orthopaedic surgeon who has been with OSC since 1992. His practice is focused on sports-related injuries and disorders, with a special emphasis on hips, knees and shoulders.

Robert J. Snyder, M.D.

Dr. Bob Snyder joined OSC in 1994. He is a board-certified orthopaedic surgeon whose practice is primarily focused on arthroscopy of the knee and shoulder, as well as total joint replacement and treatment for sports-related injuries.

Jeffrey R. Carlson, M.D.

Dr. Jeffrey Carlson joined OSC in 1999, and serves as the President and Managing Partner. He is a board-certified, fellowship-trained spine specialist who focuses on the treatment of injuries and disorders of the spine.

Martin R. Coleman, M.D.

Dr. Coleman joined OSC in 2002. A graduate of Harvard College, NYU Medical School and the University of Pennsylvania Orthopaedic Surgery Residency Program, Dr. Coleman is Board Certified and specializes exclusively in the care and treatment of injuries and diseases of the shoulder.

Mark W. McFarland, D.O.

Dr. Mark McFarland joined OSC in 2005. He is a board-certified and fellowship-trained Spine Specialist. His practice is focused primarily on the care and treatment of injuries and disorders of the spine. He specializes in Less-Exposure Spine Surgery (LESS)

Raj N. Sureja, M.D.

Dr. Raj Sureja joined OSC in 2008 as a board-certified, fellowship-trained Interventional Pain Management Specialist. His practice is focused on pain reduction of the spine and spine-related disorders through minimally-invasive interventional procedures.

Jenny L. F. Andrus, M.D.

Dr. Jenny Andrus is an interventional pain management physician who joined OSC in 2009. Her practice focuses on the treatment of painful musculoskeletal and neurologic disorders.

John D. Burrow, D.O.

As a fellowship-trained orthopaedic surgeon, my practice is focused on the treatment of arthritic or injured hip and knees, with special interest in revision surgery for failed previous total knee or hip replacements.

Joel D. Stewart, M.D.

Dr. Stewart is a board-certified orthopaedic surgeon who holds a Fellowship in Orthopaedic Foot and Ankle Surgery. He is a reputable surgeon whose practice focuses on reconstruction of the foot and ankle.

Dr. Andrew L. Martin

Dr. Martin comes to OSC after serving 20 years as an active-duty Navy clinical psychologist, where he specialized in psychotherapy for chronic pain, trauma, depression, and anxiety.


Tonia Yocum, PA-C

Tonia Yocum completed Physician Assistant school at Alderson-Broaddus College in West Virginia, with a Bachelor of Medical Science and Sports Medicine.

Erin Lee, PA-C

Erin Lee P.A., received her undergraduate degree in Biology at North Carolina State University. She furthered her education by obtaining her Master’s degree in Surgical

Christopher Schwizer, PA-C

Chris comes to us from Princeton Orthopaedic Associates, in Princeton, New Jersey, where he has been employed as an Orthopaedic Physician Assistant since 2010.

Lauren Copley, PA-C

Master of Science in Physician Assistant Studies. December 2014 Shenandoah University, Winchester, VA. Bachelor of Science in Biology. May 2011. Minor in Psychology


Monica Beckett, AGACNP-BC

A Navy veteran, Monica brings to OSC a wealth of experience, most recently working for a four-location private medical practice which provided primary and urgent care, concierge medicine and senior care for an assisted-living facility.

Kelsey Wood, NP

Kelsey Wood, NP practices with and assists Dr. Mark McFarland in the office and in surgery. She provides care and treatment for our patients with spine-related and other orthopaedic conditions.