Saint Thomas Medical Group 4230 Harding Pike, Ste 501 Nashville, TN 37205 Get Directions Phone: (615) 250-4196 Website: www.stmg.org Other Details About Gary McDonald, MD is a Internal Medicine specialist in Nashville, TN. Dr. McDonald graduated from the Vanderbilt University School of Medicine in 1988. Languages: English Physician Association: STMN Back