Clinical interests for Dr. Denniston include warts, ankle sprain, and athlete's foot. Before performing his residency at Grady Memorial Hospital, Dr. Denniston attended the University of South Carolina School of Medicine and Medical University of South Carolina College of Medicine for medical school. Patient reviews placed Dr. Denniston at an average of 4.0 stars out of 5. He accepts Blue Cross/Blue Shield, TRICARE, and Medicare Supplement (Medigap), in addition to other insurance carriers.