About CHI St. Alexius Health CHI St. Alexius Health is a Level II Trauma Center and is the largest health care delivery system in central and western North Dakota that is comprised of a tertiary hospital in Bismarck and critical access hospitals (CAHs) in Carrington, Dickinson, Devils Lake, Garrison, Turtle Lake, Washburn and Williston and numerous clinics and outpatient services. CHI St. Alexius Health - Bismarck, is a 185-bed, full-service, acute care medical center offering a full line of inpatient and outpatient medical services, including primary and specialty physician clinics; home health and hospice services; durable medical equipment services and a fitness and human performance center.