Dr. Polston earned his medical degree from the University of Louisville in 1999 and then completed his internship and neurology residency at Mayo Clinic in Rochester, Minn. This was followed by a one-year fellowship in peripheral nerve disease at Mayo Clinic and a one-year fellowship in clinical neurophysiology and neuromuscular disorders at Cleveland Clinic. He joined the Cleveland Clinic staff in 2005. He is board-certified in neurology, neuromuscular medicine and clinical neurophysiology by the American Board of Psychiatry and Neurology, in electrodiagnostic medicine by the American Board of Electrodiagnostic Medicine and in nerve pathology by the American Academy of Neurology Committee on Neuromuscular Pathology.