His clinical interests include endoscopic sinus surgery, nasal polypectomy, and deviated septum. Patients gave Dr. Maddox an average rating of 3.0 stars out of 5. He is in-network for several insurance carriers, including Anthem, Blue Cross/Blue Shield, and Blue Cross Blue Shield Bronze. After completing medical school at the University of Texas Southwestern Medical School, Dr. Maddox performed his residency at a hospital affiliated with the University of Tennessee. He is professionally affiliated with Baylor Medical Center at Garland.