Mayo is a team practice of medicine enhanced by medical education and research. Almost 400,000 patients a year come to its outpatient clinics and hospitals in five states.

Pediatric hospital within St. Mary's Hospital. Neonatal Intensive Care Unit, Pediatric Intensive Care Unit, general pediatric and adolescent medical care.

794-bed hospital. Specialties include OB/GYN; women's cancer program; and liver, kidney, pancreas, and bone marrow transplants.

Founded by Franciscans, this Mayo hospital offers air ambulance, heart and lung transplants, neurosurgery, stroke rehab. Also conducts research.