Mayo Clinic is a nonprofit worldwide leader in medical care, research and education for people from all walks of life. Doctors from every medical specialty work together to care for patients, joined by common systems and a philosophy of "the needs of the patient come first." Mayo Clinic is governed by a 33-member Board of Trustees. Mayo Clinic has more than 3,300 physicians, scientists and researchers from every medical specialty. They work together with 46,000 allied health employees to care for more than half a million patients each year, from every U.S. state and many countries.