| Season 15 | |
 | |
| No. of episodes | 22 |
| Original network | NBC |
| Original run | September 25, 2008 – April 2, 2009 |
| DVD release | July 12, 2011 |
| Season chronology | |
| Previous 14 | Next N/A (Finale) |
The fifteenth and final season of the medical drama series ER which originally aired from NBC on September 25, 2008 and concluded on April 2, 2009. The season consists of 22 episodes.
Cast and characters
- Main article: Season fifteen characters
- See also: Season fifteen cast
| Actor/actress | Character | Role |
|---|---|---|
| Goran Višnjić | Dr. Luka Kovac | Ex-Chief of Emergency Medicine |
| Maura Tierney | Dr. Abby Lockhart | Emergency Medicine Attending |
| Mekhi Phifer | Dr. Greg Pratt | Emergency Medicine Attending |
| Scott Grimes | Dr. Archie Morris | Emergency Medicine Attending |
| Parminder Nagra | Dr. Neela Rasgotra | Surgical Resident (Year 3) |
| John Stamos | Dr. Tony Gates | Emergency Medicine Resident (Year 2) |
| Linda Cardellini | Nurse Samantha "Sam" Taggart | ER Nurse |
| David Lyons | Dr. Simon Brenner | Emergency Medicine Attending |
| Angela Bassett | Dr. Catherine Banfield | Chief of Emergency Medicine |
Plot synopsis
Episodes
- Main article: Episodes
