About Timothy D. Dibble, MD. Timothy D. Dibble, MD is an internal medicine doctor and primary care doctor who practices at Results-Ast Jv, LLC located at 4230 Harding Road in Suite 400 in Nashville, TN 37205 (Davidson County). Dr. Timothy D. Dibble may be affiliated with: Results-Ast Jv, LLC in Nashville, TN 37205; St Thomas Medical Group ....