ER (TV) Cast
The cast of ER. Updated on August 27, 2025.
3,978 actors
Noah Wyle
as John Carter (249 episodes)
Goran Visnjic
as Luka Kovac (196 episodes)

Goran Visnjic played the role of Luka Kovac in ER. Luka is a Croatian doctor who joins the ER team at County General Hospital. He has a complicated past and brings a compassionate and skilled approach to his work.

Maura Tierney
as Abby Lockhart (208 episodes)
Anthony Edwards
as Mark Greene (181 episodes)
Mekhi Phifer
as Greg Pratt (133 episodes)

Mekhi Phifer portrayed the character of Greg Pratt in ER. Greg is an ambitious and talented doctor who rises through the ranks at County General Hospital. He faces various challenges and personal struggles throughout his time on the show.

Sherry Stringfield
as Susan Lewis (141 episodes)

Sherry Stringfield portrayed the character of Susan Lewis in ER. Susan is a skilled physician with a strong sense of empathy. She is dedicated to her work and often finds herself personally invested in her patients' well-being.

Alex Kingston
as Elizabeth Corday (159 episodes)

Alex Kingston portrayed the character of Elizabeth Corday in ER. Elizabeth is a British surgeon who joins the team at County General Hospital. She is known for her expertise in her field and her strong-willed personality.

Parminder Nagra
as Neela Rasgotra (129 episodes)

Parminder Nagra portrayed the character of Neela Rasgotra in ER. Neela is a talented and determined medical student who later becomes a doctor. She faces various challenges in her personal and professional life throughout the series.

Linda Cardellini
as Samantha Taggart (125 episodes)

Linda Cardellini played the role of Samantha Taggart in ER. Samantha is a nurse who starts as a student nurse and progresses to become a skilled and compassionate caregiver. She is known for her dedication to her patients and colleagues.

Shane West
as Ray Barnett (68 episodes)
Julianna Margulies
as Carol Hathaway (135 episodes)
Laura Innes
as Kerry Weaver (257 episodes)
Ming-Na Wen
as Jing-Mei Chen (118 episodes)
Scott Grimes
as Archie Morris (114 episodes)
Sharif Atkins
as Michael Gallant (60 episodes)
Paul McCrane
as Robert Romano (124 episodes)
David Lyons
as Simon Brenner (22 episodes)

David Lyons played the role of Simon Brenner in ER. Simon is a confident and skilled physician who joins the ER team. He brings a level of charm and wit to his interactions with patients and colleagues.

Michael Michele
as Cleo Finch (55 episodes)
Angela Bassett
as Catherine Banfield (22 episodes)

Angela Bassett played the role of Catherine Banfield in ER. Catherine is an experienced and no-nonsense chief of the emergency department. She is a strong leader who is dedicated to providing the best care to patients in her care.

Erik Palladino
as Dave Malucci (47 episodes)
Kellie Martin
as Lucy Knight (36 episodes)
Eriq La Salle
as Peter Benton (169 episodes)
Maria Bello
as Anna Del Amico (25 episodes)
George Clooney
as Doug Ross (107 episodes)
Gloria Reuben
as Jeanie Boulet (83 episodes)
John Stamos
as Tony Gates (66 episodes)
Corbin Bleu
as Little Boy (1 episode)
Seidy López
as Rosaria 'Puppet' Gutierrez (1 episode)
Eileen Ryan
as Barbara Dean (1 episode)
Mary Mara
as Loretta Sweet (9 episodes)
Tommy Lister Jr.
as Patient (1 episode)
Kimmy Robertson
as Arlena (1 episode)
Bill Cobbs
as Mr. Bowman (1 episode)
Michael Galeota
as Joseph O'Connor (1 episode)
Justin Cooper
as Kid (1 episode)
Austin O'Brien
as Kyle Kazlaw (1 episode)
Robert Carradine
as John Koch (1 episode)
Bradley Whitford
as Sean O'Brien (2 episodes)
Tony Plana
as Priest (1 episode)
Rachael Bella
as Sarah Gasner (2 episodes)
Richard Brooks
as Mr. Freeman (1 episode)
Natanya Ross
as Mandy Horne (1 episode)
Shelley Malil
as Dr. Urami (1 episode)
Michelle Clunie
as Gretchen (1 episode)
Octavia Spencer
as Maria Jones (1 episode)
Bobby Edner
as Zach (1 episode)
Todd Susman
as Dr. Sam Jenkins (1 episode)
Harrison Young
as Parmelli (1 episode)
Nathan Davis
as Mr. Novotny (1 episode)
Catherine Lloyd Burns
as Amy (2 episodes)
Jenny O'Hara
as Rhonda Sterling (2 episodes)
Vanessa Martinez
as Tiffany James (1 episode)
Michael Cornacchia
as Ted (1 episode)
Garret Dillahunt
as Steve Curtis (5 episodes)
Carrie Snodgress
as Mrs. Lang (1 episode)
Gina Gallego
as Instructor (1 episode)
Julie Hagerty
as Brenda Wilkerson (1 episode)
Howard McGillin
as Herrguth (1 episode)
Erin Chambers
as Brooke Sawyer (1 episode)
Marnie McPhail
as Lisa Sailor (1 episode)
Keram Malicki-Sánchez
as Rick (1 episode)
Jim Parrack
as Phil (1 episode)
Sam Sarpong
as Antwan (1 episode)
Ned Bellamy
as Detective (2 episodes)
John Mahoney
as Bennett Cray (1 episode)
Taylor Negron
as Mr. Prole (1 episode)
Maggie Lawson
as Shannon Mitchell (1 episode)
Maile Flanagan
as Elaine Martinelli (1 episode)
Felicity LaFortune
as Annette Lucas (1 episode)
Gia Carides
as Suzanne Alner (1 episode)
Diane Ladd
as Mrs. Pooler (1 episode)
Thom Mathews
as Michael Mazovick (1 episode)
Sara Rue
as Jane (1 episode)
Ellen Wheeler
as Beth Lang (1 episode)
Terrence Evans
as Barry Mahoney (1 episode)
Julia Whelan
as Laura (1 episode)
Ron Fassler
as Aaron's Father (1 episode)
Tonea Stewart
as Pearl (1 episode)
Gail Strickland
as Dr. Renee Spielman (1 episode)
Ulysses Cuadra
as Jaime Landeta (1 episode)
Jesse Garcia
as Daniel Rodriguez (1 episode)
Courtland Mead
as Vanilla Latte Boy (1 episode)
Roger Aaron Brown
as Dr. Jared Ames (1 episode)
Lee Arenberg
as Juke (1 episode)
Robert Ellenstein
as Dr. Swanson (1 episode)
Claire Yarlett
as Claudia Olson (1 episode)
Billy Blanks
as Tae-Bo Instructor (1 episode)
Jennifer Lothrop
as Supervisor (1 episode)
Michael Weston
as Rafe Hendricks (2 episodes)
Eric Christmas
as Mr. Heath (1 episode)
Sal Viscuso
as Mr. Weller (1 episode)
Marlene Warfield
as Babs Chenovert (1 episode)
Carl Gordon
as Mr. Owens (1 episode)
Keri Lynn Pratt
as Audrey Hoffman, Miss Skokie (2 episodes)
Stana Katic
as Blaire Collins (2 episodes)
Shohreh Aghdashloo
as Riza Kardatay (1 episode)
Robbi Chong
as Sonya Ames (1 episode)
Hank Cheyne
as Wong (1 episode)
Michael Jace
as Bill Nelson (2 episodes)
Harold Perrineau
as Isaac Price (1 episode)
For the best insights and data about the TV show ER, visit our main ER page.