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.
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, Kovac and Sam’s relationship deteriorates and Gallant makes an unexpected return from Iraq.
Main cast
Noah Wyle as Dr. John Carter - Attending Physician
Maura Tierney as Dr. Abby Lockhart - ER Intern
Mekhi Phifer as Dr. Greg Pratt - Third Year Resident
Alex Kingston as Dr. Elizabeth Corday - Chief of Surgery
Goran Visnjic as Dr. Luka Kovač - Attending Physician
Sherry Stringfield as Dr. Susan Lewis - Chief of Emergency Medicine
Ming-Na as Dr. Jing-Mei Chen - Attending Physician
Parminder Nagra as Neela Rasgotra - ER Intern
Linda Cardellini as Nurse Samantha Taggart
Shane West as Dr. Ray Barnett - ER Intern
Laura Innes as Dr. Kerry Weaver - Chief of Staff
Doctors and medical students
Sam Anderson as Dr. Jack Kayson - Chief of Cardiology
Amy Aquino as Dr. Janet Coburn - Chief of Obstetrics and Gynecology
John Aylward as Dr. Donald Anspaugh - Surgeon and Hospital Board Member
Leland Orser as Dr. Lucien Dubenko - Attending Surgeon and later Chief of Surgery
Scott Grimes as Dr. Archie Morris - ER Third Year Resident Later Chief Resident
Sara Gilbert as Jane Figler - Medical Student
Eion Bailey as Jake Scanlon - Medical Student
Lou Richards as Dr. Perkins
Francesco Quinn as Dr. Alfonso Ramírez
Andy Powers as Dr. Howard Ritzke
Norbert Weisser as Dr. Adler
Nurses
Deezer D as Nurse Malik McGrath
Laura Cerón as Nurse Chuny Márquez
Yvette Freeman as Nurse Haleh Adams
Lily Mariye as Nurse Lily Jarvik
Dinah Lenney as Nurse Shirley
Bellina Logan as Nurse Kit
Kyle Richards as Nurse Dori
Liza Del Mundo as Nurse Severa
Nadia Shazana as OR Nurse Jacy
Staff and paramedics
Abraham Benrubi as Desk Clerk Jerry Markovic
Mädchen Amick as Social Worker Wendall Meade
Troy Evans as Desk Clerk Frank Martin
Emily Wagner as Paramedic Doris Pickman
Monte Russell as Paramedic Zadro White
Lyn. A Henderson as Paramedic Pamela Olbes
Demitrius Navarro as Paramedic Morales
Brian Lester as Paramedic Brian Dumar
Louie Liberti as Paramedic Bardelli
Pamela Sinha as Desk Clerk Amira
Family
Thandie Newton as Makemba 'Kem' Likasu
Garret Dillahunt as Steve, Sam's Ex-Boyfriend and Alex's father
Sharif Atkins as Dr. Michael Gallant
Ray Liotta as Charlie Metcalf