Grady Memorial Hospital, frequently referred to as Grady Hospital or simply Grady, is the public hospital for the city of Atlanta. It is the tenth-largest public hospital in the United States, and one of the busiest Level I trauma centers in the country. Historical segregation of its hospital units meant that it was also called "The Gradys," a name that still surfaces among elderly Atlanta residents, especially African-Americans. It is the flagship of the Grady Health System.