FULLY EQUIPPED. FULLY EXPERIENCED. 501 Summit St. Yankton, SD 57078 AveraSacredHeart.org Call 605-668-8000 to schedule an appointment. From obstetrics to geriatrics, surgery to routine exams, Avera Sacred Heart Hospital offers a wide range of services right in the Yankton community. Complemented by our experts and advanced technology, we are your full-service hospital. Our Emergency Department is open 24 hours a day — every day — to care for big and small emergencies. Call 911 if needed.