All 51 actors in both ER and Everwood
51 actors have appeared in both ER and Everwood, across 420 episodes. The most-credited is John Aylward, Dr. Donald Anspaugh in ER and Walter Cunningham in Everwood.
| Actor | In ER | In Everwood | Eps | Eps |
|---|---|---|---|---|
| John Aylward | Dr. Donald Anspaugh | Walter Cunningham | 74 | 1 |
| Elizabeth Mitchell | Dr. Kim Legaspi | Sara Beck | 14 | 1 |
| Gedde Watanabe | Nurse Yosh Takata | Art | 58 | 1 |
| Gina Ravera | Dr. Bettina DeJesus | Stacey | 13 | 1 |
| Erica Gimpel | Adele Newman | Dr. Gans | 19 | 1 |
| Freda Foh Shen | Audiologist | Dr. Chao | 3 | 5 |
| Bret Loehr | Matthew | Magilla Foster | 1 | 4 |
| Ben Weber | Lou | Chris Beals | 2 | 4 |
| Keith David | Pastor Watkins | Brian | 5 | 1 |
| Nia Long | Christy Wilson | Cassie | 1 | 1 |
| Ernie Hudson | Colonel James Gallant | Bill Hoover | 2 | 1 |
| Shane Haboucha | Barry Kendrick | Charlie Hayes | 1 | 4 |
| Diane Delano | Stella Willis, Delores | Mary | 5 | 1 |
| J.K. Simmons | Gus Loomer | Phil Drebbles | 1 | 1 |
| Mark Elliott Silverberg | Med Student Urbanus | Josh Stein | 2 | 2 |
| Tom Parker | Matt Gilespie | Brian Hartman | 1 | 2 |
| Monnae Michaell | Mrs. Bell | Madeleine | 1 | 2 |
| Richard Herd | Dr. Murphy | Herb Roberts | 1 | 2 |
| Kevin Tighe | Sgt. Pete Mattimore | Joe Morris | 1 | 1 |
| Albie Selznick | Mr. Lanford | Dr. Albert Franco | 1 | 2 |
| Amy Stewart | Linsey Cordova | Dr. Parsons | 2 | 1 |
| Austin Tichenor | Mr. Sumpter | Dr. Bass | 1 | 2 |
| David Eigenberg | Detective Trent Mallory | Chris Templeman | 1 | 1 |
| Denise Dowse | Mrs. Lysell | Laura Hoover | 1 | 1 |
| Elaine Kagan | Mrs. Shearer | Angela Bardem | 1 | 1 |
| Eyal Podell | Sammo | Justin | 1 | 2 |
| Jessica Tuck | Dr. Hemmings | Bonnie | 1 | 1 |
| Tom Virtue | Pares | Juilliard Administrator | 1 | 1 |
| Walter Olkewicz | Georgia's Man | Mike O'Connell | 1 | 1 |
| Annie O'Donnell | Eve | Librarian | 1 | 1 |
| Brooke Bloom | Quinn | College Guide | 1 | 1 |
| Camille Guaty | Mia | Serena | 1 | 1 |
| Clyde Kusatsu | Review Board Doctor #1 | Edward Ogawa | 1 | 1 |
| Colleen Flynn | Jodi O'Brien | Chief of Human Resources | 1 | 1 |
| Derek Webster | Officer Kenny Grant | FBI Agent | 1 | 1 |
| Kathryn Joosten | Lois | Mrs. Hammerhill | 1 | 1 |
| Lamont Thompson | Paul GIlliam | Brian | 1 | 1 |
| Phillip Jeanmarie | Patient | Pete Boroni | 1 | 1 |
| Reiley McClendon | Aaron James | Travis | 1 | 1 |
| Gina Hecht | Radiology Tech | Gastroenterologist | 2 | 1 |
| Lisa Waltz | Mrs. Wimbur | Diane Shumacher | 1 | 2 |
| Cheryl White | Meryl Sites | Mrs. Wilson | 1 | 1 |
| Dendrie Taylor | Mrs. Knoll | Mrs. Thomson | 1 | 1 |
| Stephen Spinella | Henry Lotery | Father Patrick | 1 | 1 |
| Tom Wright | Wharton | Carl's Lawyer | 2 | 1 |
| Joan McMurtrey | Birdwatcher | Mrs. Curtis | 1 | 1 |
| Sean Mahon | Community Hospital Doctor | Pseudo Patient | 1 | 1 |
| Tegan West | Construction Boss | Jerry McGinns | 1 | 1 |
| McNally Sagal | Madeline | Adoption Agency Evaluator | 1 | 1 |
| Chris Kendrick | Deputy Two | Howard Foster | 1 | 1 |
| Joey Miyashima | Deputy One | Dr. Friesen | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.