Carilion Clinic, P.O. Box 13966, Roanoke, VA 24038; In Person. Due to the COVID-19 pandemic, Carilion Clinic's payment center at 1502 Williamson Road NE will temporarily close to the public beginning Monday, March 23 at 8 a.m. Patients who need to pay a bill or have a billing-related question should contact us by phone or online..