Actors in both Chicago Fire and ER
103 actors have appeared in both Chicago Fire and ER, across 628 episodes. The most-credited is Abraham Benrubi, Russ LaPointe in Chicago Fire and Jerry Markovic in ER.
| Actor | In Chicago Fire | In ER | Eps | Eps |
|---|---|---|---|---|
| Abraham Benrubi | Russ LaPointe | Jerry Markovic | 1 | 137 |
| Amy Morton | Desk Sergeant Trudy Platt | Mrs. Walters | 41 | 1 |
| Christian Stolte | Lieutenant Randy "Mouch" McHolland | Driver | 24 | 1 |
| Mariska Hargitay | Sergeant Olivia Benson | Cynthia Hooper | 1 | 13 |
| Scott Jaeck | Firefighters' Attorney | Dr. Steven Flint | 1 | 12 |
| Eamonn Walker | Deputy Commissioner Wallace Boden | Dr. Stephen Dakarai | 1 | 3 |
| William Smillie | Kevin Hadley | Cassani | 26 | 1 |
| Sarah Shahi | Renee Royce | Tara King | 10 | 1 |
| Shiri Appleby | Clarice Carthage | Dr. Daria Wade, Ms. Murphy | 6 | 10 |
| Mo Gallini | Firefighter Jose Vargas | Guy | 8 | 1 |
| Mena Suvari | Isabella | Laura-Lee Armitage | 7 | 1 |
| Troy Winbush | Detective Pryma | Uniform Cop | 7 | 1 |
| Andrew Rothenberg | Mr. Jameson | Pauly Johnson | 4 | 1 |
| Fredric Lehne | Deputy District Chief Ray Riddle | Bum's Friend | 7 | 1 |
| Barbara Eve Harris | Commander Emma Crowley | Sakina, Mrs. Kendrick | 3 | 3 |
| Carl Weathers | State's Attorney Mark Jefferies | Louie Taylor | 2 | 1 |
| Jacqueline Williams | Officer Becerra | Krieg, TSA Guard | 5 | 2 |
| Meg Thalken | Administrator, Miriam Price | Flight Nurse Dee McManus, Rottman | 2 | 7 |
| Ron Dean | James Whoritsky | Uncle Joey | 3 | 1 |
| Christopher Cousins | Steven Goody | Kyle Kolber | 2 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.