St. Mary's Regional Medical Center in Enid, Oklahoma is a 229-bed hospital serving the inpatient and outpatient needs of the Northwest Oklahoma community. Our areas of specialization include Cardiovascular Services, Neurological and Spine services, Orthopedics, Women's Health, Behavioral Health, Emergency Medicine and Physical Rehabilitation.Online Bill Pay‧Health Records Online‧Find a Doctor‧Contact Us‧Services‧About.