Michael S. Hisey, M.D. Orthopedic Spine Surgeon Texas Back Institute Orthopedic Spine Surgery. 3537 S I35E Suite 308 Denton, TX 76210. work. 4370 Medical Arts Dr. River Walk Building III Suite 230 Flower Mound, TX 76210. work. Phone: 940-382-2204. work. Work Email: info@texasback.com..