Actors in both ER and The Rookie
166 actors have appeared in both ER and The Rookie, across 475 episodes. The most-credited is Ellen Crawford, Nurse Lydia Wright, Woodward in ER and Shirley in The Rookie.
| Actor | In ER | In The Rookie | Eps | Eps |
|---|---|---|---|---|
| Ellen Crawford | Nurse Lydia Wright, Woodward | Shirley | 114 | 1 |
| Arjay Smith | Brian | James Murray | 1 | 31 |
| Matthew Glave | Dr. Dale Edson | Oscar Hutchinson | 15 | 13 |
| Michael Beach | Al Boulet | Commander Percy West | 19 | 7 |
| Angel Parker | Gibbs | Luna Grey | 2 | 20 |
| Sharif Atkins | Dr. Michael Gallant | Police Officer | 12 | 1 |
| Currie Graham | James | Ben McRee | 1 | 7 |
| Lourdes Benedicto | Rena Trujillo | Imelda Sanchez | 5 | 1 |
| Michelle C. Bonilla | Paramedic Christine Harms | Martina Sanchez | 58 | 1 |
| Harold Perrineau | Isaac Price | Detective Nick Armstrong | 1 | 10 |
| Demetrius Grosse | Officer Newkirk | Detective Kevin Wolfe | 5 | 5 |
| Niecy Nash | Judith Anderson | FBI Trainee Simone Clark | 1 | 4 |
| Gil McKinney | Dr. Paul Grady | Barry Langley | 23 | 1 |
| Julie Ann Emery | Paramedic Niki Lumley | Stacy | 6 | 2 |
| Sarah Shahi | Tara King | Jessica Russo | 1 | 7 |
| Sara Rue | Jane | Nell Forester | 1 | 6 |
| Camille Guaty | Mia | Sandra "La Fiera" De La Cruz | 1 | 5 |
| José Zúñiga | Eduardo Lopez | Nestor Garcia | 2 | 1 |
| Ryan Michelle Bathé | Miss Evelyn | Detective Jennifer Paige | 1 | 2 |
| Kamar de los Reyes | Hernandez, Paramedic | Detective Sergeant Ryan Caradine | 3 | 5 |
Cast data from TVmaze, licensed CC BY-SA 4.0.