THE CAST


For a show that ran for 15 seasons, it would take forever to list every single person that has ever appeared on the show. The following list is just the main cast. If you wish to take a trip down memory lane or just want to see the lists of all of the characters, check out these lists from Wikipedia:
- The Cast of ER - The Secondary Cast of ER

Mark Greene played by Anthony Edwards. Main character from seasons 1-8. Guest star in season 15.
Doug Ross played by George Clooney. Main character from seasons 1-5. Guest star in seasons 6 & 15.
Susan Lewis played by Sherry Stringfield. Main character from seasons 1-3 and 8-12. Guest star in season 15.
John Carter played by Noah Wyle. Main character from seasons 1-11. Guest star in seasons 12 & 15.
Peter Benton played by Eriq La Salle. Main character from seasons 1-8. Guest star in season 15.
Carol Hathaway played by Julianna Margulies. Main character from seasons 1-6. Guest star in season 15.
Jeanie Boulet played by Gloria Reuben. Recurring in season 1. Main character from seasons 2-6. Guest star in season 14.
Jing-Mei "Deb" Chen played by Ming-Na Wen. Recurring in season 1. Main character from seasons 6-11.
Kerry Weaver played by Laura Innes. Recurring in season 2. Main character from seasons 3-13. Guest star in season 15.
Anna Del Amico played by Maria Bello. Recurring in season 3. Main character in season 4
Elizabeth Corday played by Alex Kingston. Main character from seasons 4-11. Guest star in season 15.
Robert Romano played by Paul McCrane. Recurring in seasons 4-5. Main character from seasons 6-10. Guest star in season 15.
Lucy Knight played by Kellie Martin. Main character from seasons 5-6.
Luka Kovac played by Goran Visnjic. Main character from seasons 5-14.
Abby Lockhart played by Maura Tierney. Main character from seasons 6-15.
Cleo Finch played by Michael Michele. Main character from seasons 6-8.
Dave Malucci played by Erik Palladino. Main character from seasons 6-8.
Michael Gallant played by Sharif Atkins. Main character from seasons 8-12.
Neela Rasgotra played by Parminder Nagra. Main character from seasons 10-15.
Samantha Taggart played by Linda Cardellini. Main character from seasons 10-15.
Greg Pratt played by Mekhi Phifer. Main character from seasons 8-15.
Archie Morris played by Scott Grimes. Main character from seasons 10-15.
Ray Barnett played by Shane West. Main character from seasons 11-13. Guest star in season 15.
Tony Gates played by John Stamos. Recurring in season 12. Main character from seasons 13-15.
Simon Brenner played by David Lyons. Main character from seasons 14-15.
Catherine Banfield played by Angela Bassett. Main character in season 15.