Actors in both ER and The O.C.
76 actors have appeared in both ER and The O.C., across 423 episodes. The most-credited is Alan Dale, Al Patterson in ER and Caleb Nichol in The O.C..
| Actor | In ER | In The O.C. | Eps | Eps |
|---|---|---|---|---|
| Alan Dale | Al Patterson | Caleb Nichol | 3 | 14 |
| Samaire Armstrong | Tasha | Anna Stern | 1 | 15 |
| Demetrius Navarro | Paramedic Morales | Arturo Diaz | 53 | 1 |
| Shannon Lucio | Johanna Lambright | Lindsay Gardner | 1 | 12 |
| Perry Anzilotti | Dr. Perry (Anesthesiologist), Ed | Mr. Greenberg | 22 | 2 |
| Gary Grubbs | Emmett Chambliss | Gordon Bullit | 1 | 6 |
| José Zúñiga | Eduardo Lopez | Jason Spitz | 2 | 3 |
| Rosalind Chao | Dr. Theresa Chow | Dr. Kim | 1 | 6 |
| Michelle Hurd | Courtney Brown | Ms. Fisher | 6 | 1 |
| Brian McNamara | Gil Brenner | Carson Ward | 1 | 3 |
| Lamont Thompson | Paul GIlliam | Greg Hodes | 1 | 4 |
| Shaun Duke | Detective, Painter | Dr. Henry Griffin | 2 | 4 |
| Julia Ling | Med Student Mae Lee Park, Michelle | Lucy | 5 | 1 |
| Lorna Scott | Stan's Wife | Beatrice | 1 | 2 |
| Michael Adler | Marty, Rick | Jeff Frenkel | 2 | 2 |
| Cynthia Avila | Psych Clerk | Eva Diaz | 1 | 3 |
| Bruno Amato | Sheriff | Archie | 1 | 2 |
| Henri Lubatti | Victor | Henri-Michel de Momourant | 1 | 2 |
| Ruth Williamson | Registry Nurse | Peggy | 1 | 2 |
| Tom Wright | Wharton | Paul Glass | 2 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.