US Mail: CHI St. Alexius Health Heart & Lung Clinic Medical Records Post Office Box 2698 Bismarck, North Dakota 58502-2698. C. CHI St. Alexius Health Clinics (formerly The Clinics of St. Alexius) Email: staclinicsroi@primecare.org Fax: 701-530-6586 US Mail: CHI St. Alexius Health Clinics 900 East Broadway Bismarck, North Dakota 58501.