OB/GYN Center Of Excellence, a Medical Group Practice located in Chattanooga, TN. LIST YOUR PRACTICE ; Dentist ; Hospital ; Pharmacy ; Search . ... Chattanooga, TN. OB/GYN Center Of Excellence . 2341 McCallie Ave Ste 302 Chattanooga, TN 37404 (423) 629-9743 . OVERVIEW; PHYSICIANS AT THIS PRACTICE; OVERVIEW ..