Erlanger Health System

The Erlanger Health System, incorporated as the Chattanooga-Hamilton County Hospital Authority, a non-profit, public benefit corporation registered in the State of Tennessee, is a system of hospitals, physicians, and medical services based in Chattanooga, Tennessee. Erlanger's main location, Erlanger Baroness Hospital, is a tertiary referral hospital and Level I Trauma Center serving a 50,000 sq mi region of East Tennessee, North Georgia, North Alabama, and western North Carolina. The system provides critical care services to patients within a 150 mi radius through six Life Force air ambulance helicopters, which are equipped to perform in-flight surgical procedures and transfusions.

Source: Wikipedia