Denton Office Health Services of North Texas – Denton South Center 3537 S Interstate 35 ESuite 315Denton, TX 76210 940-536-0706 940-536-0710 Appointment Request Your Name Your Email Your Phone Preferred Date Preferred Time Submit Request Providers Galen E. Howard, M.D. Read Bio Marie-Blanche Tchetgen, M.D. Read Bio