Carilion Children’s Tanglewood Center is located at 4348 Electric Road, Roanoke. (Tanglewood Mall). ... 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 ....