Directions. Phone. 405.936.1000. Toll free: 800.235.4443. Hours: Mon-Thurs 9 a.m. - 4:30 p.m. Fri 9 a.m. - 2:30 p.m. Closed daily for lunch 12:00 p.m. - 1:00 p.m. "My favorite medical school professors held the belief that patients honor us with the privilege of caring for them at times of great stress, and in obstetrics, times of great ....