Prior to Imaging appointments, patients must pre-register by calling 540-XXX-XXXX. Registration at least 24-hours before your appointment is preferred. Rockbridge Hospital 540-458-3351 New River Valley 540-731-2392 Tazewell 276-988-8747 Giles 540-922-4131 Franklin Memorial Hospital 540-489-6314 Roanoke Area 540-510-6400; Text Message Reminders.