He later went on to become a general surgeon. Rerych received his medical degree in 1974 from Columbia University College of Physicians and Surgeons in New York, New York. In 1975, he completed his internship at Duke University Medical Center in general and thoracic surgery. In 1986, Rerych was named the Chief Resident in General, Vascular and Thoracic Surgery at Duke University and the Veteran's Medical Center in Asheville, North Carolina. In 1990 he had his first and only child, Stephanie Rerych. In 1991, he served as an assistant clinical professor of general, vascular and thoracic surgery at the same institutions. Prior to moving to West Virginia, he was in private practice as a general, thoracic and plastic surgeon in Asheville, practicing at Memorial Mission Hospital and St. Joseph's Hospital (now combined as The Mission St. Joseph's Health System).