List of ER episodes

ER is an American medical drama television series created by novelist Michael Crichton that aired on NBC from September 19, 1994, to April 2, 2009. It was produced by Constant c Productions and Amblin Entertainment, in association with Warner Bros. Television. ER follows the inner life of the emergency room (ER) of fictional County General Hospital in Chicago, Illinois, and various critical issues faced by the room's physicians and staff. Over the course of the series, 331 episodes aired.