Whitman AFB, MO 65305-5001. Get Directions. 509th Medical Group website. 1-660-687-2188. Monday - Friday 7:30 A.M. to 4:30 P.M. Closed at noon on the fourth Thursday of every month for training Appointment Line is opened Monday - Friday 7:00 A.M. - 4:30 P.M. We are closed all weekends and Federal Holidays..