Actors in both ER and Monk
321 actors have appeared in both ER and Monk, across 455 episodes. The most-credited is Stanley Kamel, Dr. Fin Loech in ER and Dr. Charles Kroger in Monk.
| Actor | In ER | In Monk | Eps | Eps |
|---|---|---|---|---|
| Stanley Kamel | Dr. Fin Loech | Dr. Charles Kroger | 1 | 41 |
| Glenne Headly | Dr. Abby Keaton | Karen Stottlemeyer | 9 | 4 |
| Dinah Lenney | Nurse Shirley | Lotto Commissioner | 74 | 1 |
| Donal Logue | Flight Nurse Chuck Martin | Gully | 11 | 1 |
| Stanley Tucci | Dr. Kevin Moretti | David Ruskin | 10 | 1 |
| Tim Bagley | Archie Papion | Harold Krenshaw | 1 | 9 |
| Amy Aquino | Dr. Janet Coburn | Mrs. Bowen, Rhonda | 26 | 2 |
| Michael Patrick McGill | Detective Ed Bernstein, Security #1, Officer Jeffries | First Patrolman, Sgt. Steiner, Uniform Cop #2 | 6 | 3 |
| J.P. Manoux | Dr. Dustin Crenshaw, Mime | Jacob Posner | 24 | 1 |
| Rossif Sutherland | Med Student Lester Kertzenstein | Vic Blanchard | 11 | 1 |
| Marcello Thedford | Leon | Extra Large | 7 | 1 |
| Julie Bowen | Roxanne Please | Marilyn Brody | 9 | 1 |
| Bradley Whitford | Sean O'Brien | Dean Berry | 2 | 1 |
| Eve Gordon | Mrs. Nugent | Aunt Madge, Janie | 1 | 2 |
| Holland Taylor | Phyllis Farr | Peggy Davenport | 1 | 2 |
| Paul Blackthorne | Dr. Jeremy Lawson | Dr. Aaron Polanski | 5 | 1 |
| Michael B. Silver | Dr. Paul Myers | Lyle Turrow | 12 | 1 |
| Carlos Gómez | Paramedic Raul Melendez | Escobar | 6 | 1 |
| Christina Vidal | Elena Vega | Winona | 1 | 1 |
| Jeffrey Dean Morgan | Firefighter Lorcan | Steven Leight | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.