Mayo Clinic, Mayo Clinic Hospital, Saint Marys Campus and Mayo Clinic Hospital, Methodist Campus form an integrated medical center. Mayo Clinic patients who need hospitalization are cared for in one of the two Mayo Clinic hospital campus locations in Rochester. The campuses serve only Mayo Clinic patients and are staffed exclusively by Mayo Clinic doctors. A single administrative team manages both campuses to most efficiently serve patients' needs.
Saint Marys provides services in virtually every medical specialty. Saint Marys began in 1889, a joint project between the Sisters of Saint Francis and the Mayo brothers and their father. (See history.)
Five buildings at the Saint Marys Campus are named to honor Saint Marys' foundress and first administrator, Mother Alfred, and four Sisters who previously served as hospital administrators: Sisters Joseph, Domitilla, Mary Brigh and Generose. The Francis Building honors the many Franciscan Sisters who have served since the founding of Saint Marys.
Among the areas unique to Saint Marys are:
- Neurosurgery, including computer-assisted brain surgery and gamma knife treatment
- Epilepsy Monitoring Unit
- Cardiac treatment, including heart and lung transplant and robotic heart surgery
- Emergency Department, a Level One Trauma Center, including Mayo One, Minnesota's first air ambulance service
- Rehabilitation unit specializing in care of stroke, spinal cord injury and traumatic brain injury and a Pain Rehabilitation Center to treat patients who have chronic pain
- Ten intensive care units
- Mayo Eugenio Litta Children's Hospital, including neonatal intensive care
- Mayo Psychiatry and Psychology Treatment Center, Generose Building
- Saint Marys also houses a number of research laboratories, including the General Clinical Research Center, which coordinates a wide variety of patient-related research, Gastrointestinal Research Unit, Endocrine Research Unit and Diabetes Research Unit.