Originally from Dayton, Ohio, Dr. McQuain graduated from Ohio State University College of Medicine in 1986. He completed his internship at Mount Carmel Medical Center in Columbus, Ohio, followed by a residency in physical medicine and rehabilitation at the Mayo Graduate School of Medicine in Rochester, Minnesota.

Dr. McQuain is board certified by the American Board of Physical Medicine and Rehabilitation and the American Board of Electrodiagnostic Medicine. He is a member of the Tennessee Medical Association and the American Academy of Physical Medicine and Rehabilitation. As a specialist in Physical Medicine and Rehabilitation, Dr. McQuain focuses on restoring function for patients who have been disabled as a result of disease, disorder, or injury.