The eleventh season of the American fictional drama television series ER first aired on September 23, 2004, and concluded on May 19, 2005. The eleventh season consists of 22 episodes.

Plot

Several long term characters exit the series including Corday who quits after performing an illegal operation, Chen leaves to care for her ailing father and Carter also departs the ER to return to Africa with Kem. Elsewhere Lewis is promoted to ER Chief, Abby and Neela begin their internships along with newcomer Ray Barnett, Carter and Lewis compete for tenure, Weaver finally meets her biological mother, Kovač and Sam's relationship deteriorates and Gallant makes an unexpected return from Iraq.

Cast

Main cast

Supporting cast

Guest stars

Production

Former executive producer Lydia Woodward returns as a consultant producer and writer.

Episodes