Actors in both ER and Grey's Anatomy
547 actors have appeared in both ER and Grey's Anatomy, across 798 episodes. The most-credited is Jason George, Ethan Mackiner in ER and Dr. Ben Warren in Grey's Anatomy.
| Actor | In ER | In Grey's Anatomy | Eps | Eps |
|---|---|---|---|---|
| Jason George | Ethan Mackiner | Dr. Ben Warren | 2 | 90 |
| Ellen Crawford | Nurse Lydia Wright, Woodward | Carrie Reisler | 114 | 1 |
| Jeffrey Dean Morgan | Firefighter Lorcan | Denny Duquette | 1 | 20 |
| Kathleen Wilhoite | Chloe Lewis | Leslie Goldman | 19 | 1 |
| Michael Beach | Al Boulet | Mr. Baker | 19 | 1 |
| Teresa Huang | Vivian | Nurse Ruth | 1 | 19 |
| Jeff Perry | Officer Mitch Palnick | Thatcher Grey | 1 | 15 |
| Sara Gilbert | Dr. Jane Figler | Kim Allen | 15 | 1 |
| Kim Raver | Kim Zambrano | Dr. Teddy Altman | 1 | 14 |
| Lisa Vidal | Fire Lieutenant Sandy Lopez | Dr. Alma Ortiz | 12 | 3 |
| Robin Pearson Rose | Lois | Patricia Murphy | 1 | 14 |
| Jessica Capshaw | Sally McKenna | Dr. Arizona Robbins | 1 | 13 |
| Sharif Atkins | Dr. Michael Gallant | Josh Greene | 12 | 1 |
| Gloria Garayua | Gloria Ortiz | Dr. Graciella Guzman | 1 | 24 |
| Amy Madigan | Mary Taggart | Dr. Katharine Wyatt | 2 | 9 |
| Sumalee Montano | Duvata Mahal | Lena McCallister | 10 | 1 |
| Cress Williams | Officer Reggie Moore | Tucker Jones | 14 | 7 |
| Justina Machado | Officer Claudia Diaz, Ms. Cruz | Anna Nyles | 9 | 1 |
| Amy Aquino | Dr. Janet Coburn | Marianne Grandy | 26 | 1 |
| Bresha Webb | Dr. Laverne St. John | Teresa Morris | 10 | 6 |
Cast data from TVmaze, licensed CC BY-SA 4.0.