Meet Our Team

All of our physicians are board certified in physical medicine and rehabilitation. Subspecialities include electrodiagnostic medicine, pain medicine and sports medicine.

James R. MacKenzie, M.D.

Dr. MacKenzie, is a graduate of Michigan State University, where he received his B.S., and Wayne State University School of Medicine. He did his internship and residency in physical medicine and rehabilitation at William Beaumont Community Hospital in Royal Oak and Troy, Michigan, followed by post-graduate training in orthotics, prosthetics and interventional pain management. Dr. MacKenzie has been with Physical Medicine Associates since 1989.

Stephen J. Andriese, M.D.

Dr. Andriese has a B.S. from Calvin College and while completing his M.D. at Michigan State University College of Human Medicine, he also did graduate work in African studies. He completed his internship at Blodgett Hospital in Grand Rapids, residency training at University of Michigan, and has post graduate training in interventional pain management. Dr. Andriese practiced in Grand Rapids for several years prior to joining Physical Medicine Associates in 2006.

Tracy L. Riddle, D.O.

Dr. Riddle earned her B.S. in human biology, with a specialization in health and humanities, from the Lyman Briggs Honors College of Michigan State University. After receiving her D.O. from MSU’s College of Osteopathic Medicine, she remained in the Lansing area, where she did her osteopathic internship at Ingham Regional Medical Center, was chief resident at Sparrow Hospital, and completed a fellowship at Lansing Orthopedics.

Previous to coming to Traverse City, Dr. Riddle was in private practice, specializing in interventional spine medicine and electromyography. Her professional memberships include the American Osteopathic College of Physical Medicine & Rehabilitation, the American Association of Neuromuscular & Electrodiagnostic Medicine, and the American Academy of Physical Medicine and Rehabilitation, and both the American and Michigan Osteopathic Associations.

Drew B. Parkhurst ATC, DO

Dr. Parkhurst earned his B.S. in Athletic Training at Michigan State University where he cared primarily for Football, Men’s Soccer, and Women’s Volleyball. Prior to attending medical school, he was the athletic trainer for the Women’s Soccer and Women’s Lacrosse teams at the University of Denver. Following medical school at Michigan State College of Osteopathic Medicine, he remained at Michigan State where he completed residency in Physical Medicine & Rehabilitation, serving as Chief Resident in his fourth year. Dr. Parkhurst furthered his education after residency with multiple fellowships at Michigan State University involving interventional spine, electromyography, and sports medicine. He has published several articles about nerve injury and electrodiagnostic testing as well as presenting at national conferences. Throughout his training, he has provided medical care for local high schools, USA Figure Skating, and multiple varsity teams at Michigan State University including: Football, Volleyball, Basketball, Ice Hockey, Gymnastics, Golf, Soccer, Track & Field/Cross Country, and Crew.

Dr. Parkhurst is triple board certified in physical medicine & rehabilitation, electromyography, and sports medicine. His treatment philosophy focuses on taking the time to listen and educate patients while using shared decision making to discuss all options and select the most appropriate treatment together. Dr. Parkhurst values the patient’s role as a key member of the treatment team. His primary goal is to restore and improve function in athletes of all ages and all activity levels. He and his wife moved to Traverse City with a tremendous love for the outdoors. They enjoy hiking, paddle boarding, snow shoeing, and training for triathlons.