The Cleveland Clinic (formally known as the Cleveland Clinic Foundation) is a multispecialty academic medical center located in Cleveland, Ohio, United States. The Cleveland Clinic is currently regarded as one of the top 4 hospitals in the United States as rated by U.S. News & World Report. The Cleveland Clinic was established in 1921 by four physicians for the purpose of providing patient care, research, and medical education in an ideal medical setting. One of the largest private medical centers in the world, the Cleveland Clinic saw more than 3,200,000 patient visits in 2009, with almost 80,000 hospital admissions. Patients arrive at the Cleveland Clinic from all 50 states and more than 100 nations. The Cleveland Clinic's approximately 2,500 staff physicians and residents represent 120 medical specialties and subspecialties. The Cleveland Clinic was ranked number one in America for cardiac care from 1994 to 2009.