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Mayo Clinic

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Mayo Clinic is a not-for-profit hospital complex with 100 years of service. Patients from across the country and around the world have benefitted from Mayo Clinic's excellence in clinic practice, extensive research and education programs. Mayo Clinic is ranked among the top 10 U.S. health systems in a nationwide Thomson Reuters study of clinical quality and efficiency.

Mayo Clinic specializes in hard-to-treat diseases, and it is known for innovative and effective treatments for diseases that had gone undiagnosed or under-treated in the same patients with other doctors.

For example, in 1955, a young surgeon in Rochester, Minnesota, used a heart-lung machine for direct visualization of the inside of an opened human heart to repair otherwise-fatal intracardiac defects. As a result, John W. Kirklin, M.D., and his team at Mayo Clinic in Rochester had effectively made open heart surgery a therapy that would become widely available. Since then, cardiopulmonary bypass has been used to perform more than 63,000 cardiac operations at Mayo Clinic alone, with 2,300 such procedures performed every year.

More than 55,000 doctors, scientists, students and staff work and study at Mayo Clinic campuses in Rochester, Minn., Jacksonville, Fla., and Scottsdale/Phoenix, Ariz. Mayo authors publish approximately 4,600 articles a year in biomedical journals. Collectively, Mayo Clinic cares for more than half a million people each year.