All 231 actors in both ER and The West Wing
231 actors have appeared in both ER and The West Wing, across 485 episodes. The most-credited is John Aylward, Dr. Donald Anspaugh in ER and Barry Goodwin in The West Wing.
| Actor | In ER | In The West Wing | Eps | Eps |
|---|---|---|---|---|
| John Aylward | Dr. Donald Anspaugh | Barry Goodwin | 74 | 6 |
| CCH Pounder | Dr. Angela Hicks | Deborah O'Leary | 24 | 1 |
| Janel Moloney | Nancy | Donna Moss | 1 | 22 |
| Marlee Matlin | Sign Language Instructor | Joey Lucas | 1 | 17 |
| Dinah Lenney | Nurse Shirley | Mary Klein | 74 | 1 |
| Karis Campbell | Mrs. Kenig | Ronna | 1 | 21 |
| Mary McCormack | Debbie | Kate Harper | 6 | 4 |
| Cress Williams | Officer Reggie Moore | Lester | 14 | 2 |
| Jorja Fox | Dr. Maggie Doyle | Gina Toscano | 33 | 5 |
| Amy Aquino | Dr. Janet Coburn | Becky Reeseman | 26 | 1 |
| Kathryn Joosten | Lois | Dolores Landingham | 1 | 12 |
| Allison Smith | Denny | Mallory O'Brien | 1 | 11 |
| James Cromwell | Bishop Stewart | President D. Wire Newman | 4 | 1 |
| Michael O'Neill | Col. Ken Kilner | Secret Service Agent Ron Butterfield | 1 | 14 |
| Thomas Kopache | Dr. Stofsky | Bob Slatterly | 1 | 14 |
| Steven Culp | Dave Spencer, Dr. Charles Cameron | Speaker of the House Jeff Haffley | 5 | 9 |
| Reiko Aylesworth | Chaplain Julia Dupree | Janine | 7 | 1 |
| Roma Maffia | Ms. Prager | Officer Rhonda Sachs | 3 | 1 |
| Sam Anderson | Dr. Jack Kayson | John LaSalle | 19 | 1 |
| David Brisbin | Dr. Alexander Babcock | Ken | 19 | 1 |
| Alan Alda | Dr. Gabriel Lawrence | Senator Arnold Vinick | 5 | 1 |
| Carl Lumbly | Dr. Graham Baker | Jeff Breckenridge | 2 | 1 |
| Evan Arnold | Barry Sadler | Ned | 1 | 9 |
| Carlos Gómez | Paramedic Raul Melendez | Admiral McGill | 6 | 1 |
| Matthew Glave | Dr. Dale Edson | Scott Holcomb | 15 | 1 |
| Bruce Weitz | Alderman John Bright | Senate Majority Leader | 3 | 1 |
| Glenn Morshower | Rick Decoyte | Mike Chysler | 1 | 9 |
| Joanna Gleason | Iris | Jordon Kendall | 3 | 5 |
| Thom Barry | T-Ball | Congressman Mark Richardson | 1 | 3 |
| Michael Hyatt | Yvonne Devilliere | Angela Blake | 1 | 6 |
| Valerie Mahaffey | Joi Abbott | Tawny Cryer | 4 | 1 |
| Scott Michael Campbell | EMT Reilly Brown | Donald Dolan | 7 | 1 |
| Andrew McFarlane | Jesse | Anthony Marcus | 2 | 4 |
| Lisa Edelstein | Aggie Orton | Brittany "Laurie" Rollins | 1 | 5 |
| Mary Mara | Loretta Sweet | Sherri Wexler | 9 | 1 |
| Ryan Cutrona | Wilson | CIA Director George Rollie | 1 | 6 |
| Hal Holbrook | Walter Perkins | Albie Duncan | 2 | 2 |
| Benjamin Brown | Cop, Lab Tech | Mike | 2 | 3 |
| George Cheung | Mr. Chen, Mr. Fong | Chinese Ambassador Ling-Po | 4 | 2 |
| Victor McCay | Dr. Ramsey | Henry | 1 | 5 |
| Deborah May | Nursing Director Mary Cain | Janet | 7 | 1 |
| Charley Lang | Jason Warren | Congressman Matt Skinner | 1 | 3 |
| Gabrielle Union | Tamara Davis | Meeshel Anders | 1 | 1 |
| J.K. Simmons | Gus Loomer | Harry Ravitch | 1 | 1 |
| Mitch Pileggi | Terry Waters | Senator Dresden | 1 | 1 |
| Rocky Carroll | Mr. Walker | Corey Sykes | 1 | 1 |
| Andy Umberger | Dr. David Harvey | Cal Mathis | 2 | 2 |
| Barbara Eve Harris | Sakina, Mrs. Kendrick | Gretchen Tyler | 3 | 1 |
| Dennis Cockrum | Little League Player's Father | Military Officer | 1 | 3 |
| George Wyner | Rabbi | Congressman Simmel | 2 | 1 |
| Marcelo Tubert | Galloway | Palestinian Prime Minister Saeb Mukarat | 3 | 3 |
| Wilson Cruz | Jeffrey Cruz | Jack Sosa | 1 | 2 |
| Željko Ivanek | Bruce Resnick | Steve Atwood | 1 | 2 |
| Cara DeLizia | Andrea Parks | Winifred Hooper | 1 | 1 |
| Christian Clemenson | Dr. Kurtag | Evan Woodkirk | 1 | 1 |
| Kevin Tighe | Sgt. Pete Mattimore | Governer Jack Buckland | 1 | 1 |
| Liza Weil | Samantha Sobriki | Karen Larson | 3 | 1 |
| Tom Everett | Mr. Kazlaw | Agent Charles Frost | 1 | 3 |
| Vyto Ruginis | Paramedic Wright | Mitch | 3 | 1 |
| Alan Dale | Al Patterson | Mitch Bryce | 3 | 2 |
| Ben Weber | Lou | Vic Faison | 2 | 3 |
| David Kaufman | Nick Dunn | Bob Fowler | 2 | 1 |
| James Handy | Dan Sullivan | Rep. Joseph Bruno | 1 | 2 |
| John Diehl | Johnson's Son | Larry Claypool | 1 | 2 |
| Michael Kagan | Chuck Arteburn | FBI Director George Arnold | 1 | 2 |
| Michael Mantell | Mr. Spencer | Shelly Lukens | 1 | 2 |
| David Spielberg | Dr. Neil Bernstein | Congressman | 4 | 1 |
| Iqbal Theba | Dr. Zogoiby | Indian Ambassador | 4 | 1 |
| Brigid Brannagh | Jamie Hendricks | Harriet | 1 | 1 |
| Bruce Gray | Carter Board member, Dr. Munch | Otis | 2 | 1 |
| Castulo Guerra | Judge Alter, Javier | Ed Garcia | 3 | 1 |
| Christopher Cousins | Kyle Kolber | Congressman Thiele | 1 | 1 |
| Cleo King | Mrs. Davies | Marla Worisky | 1 | 2 |
| Jillian Armenante | Tamara Gordon | Leela | 1 | 1 |
| John Cothran, Jr. | Dennis Gant, Sr. | Civilian Advisor | 1 | 2 |
| Michael Chinyamurindi | Mlungisi | Nimbala's Translator | 2 | 1 |
| Randy Oglesby | PICU Doctor | Alcoholic Politician | 1 | 1 |
| Tom Gallop | Dr. Roger Julian | Bruce | 3 | 1 |
| Dean Norris | Bomb Specialist Clark | Steve Hodder | 1 | 2 |
| Henry O | Mr. Chen | Jhin Wei | 2 | 1 |
| Ken Lerner | Harry Stopak, Stan Seidel | Congressman Marino | 2 | 1 |
| Shashawnee Hall | Detective Ford | Russell Angler | 2 | 1 |
| Tony Plana | Priest | Mickey Troop | 1 | 2 |
| Alanna Ubach | Terry's Friend | Celia Walton | 1 | 1 |
| Charlotte Colavin | Sylvia | Rep. Sheila Fields | 1 | 3 |
| Claire Yarlett | Claudia Olson | Dr. Jenna Jacobs | 1 | 1 |
| Jim Jansen | Neonatologist | Bill Fisher | 1 | 1 |
| Megan Ward | Judy Anderson | Jane | 1 | 1 |
| Nancy Linehan Charles | Glenda Walton | Oncologist | 1 | 1 |
| Svetlana Efremova | Impatient Woman | Ludmilla Koss | 1 | 1 |
| Vaughn Armstrong | Greg Mitchell | Sgt. MacNamara | 1 | 1 |
| Xander Berkeley | Detective Wilson | Franklin Hollis | 1 | 1 |
| Kenneth Tigar | Dr. Keinholz | Congressman Gladman | 2 | 1 |
| Scott MacDonald | Ambulance Driver, Detective | Cyrus Yolander | 2 | 1 |
| Tim Kelleher | U.S. Embassy Official | Dylan Clark | 1 | 2 |
| Albie Selznick | Mr. Lanford | Documentarian | 1 | 1 |
| Alfonso Freeman | Brant | Andrew Mackintosh | 1 | 1 |
| Amy Stewart | Linsey Cordova | Lisa Zimmer | 2 | 1 |
| Bill Cobbs | Mr. Bowman | Alan Tatum | 1 | 1 |
| Bob Glouberman | Jeff | Terry Beckwith | 1 | 1 |
| Carmen Argenziano | Howard Davis | Leonard Wallace | 1 | 1 |
| Daniel Roebuck | Kyle Martin | Lieutenant Buckley | 1 | 1 |
| Danielle Harris | Laura Quentin | Kiki | 2 | 1 |
| David Dunard | Irish Guy | Alcoholic Politician | 1 | 1 |
| Gary Carlos Cervantes | Cop | Bobby | 1 | 1 |
| Holmes Osborne | Dr. Sayers | Congressman Peter Lillienfield | 1 | 1 |
| Jeff Perry | Officer Mitch Palnick | Burt Ganz | 1 | 1 |
| John Apicella | Mr. Etheridge | Ralph Gish | 1 | 1 |
| John P. Connolly | Officer Billy | Matt Kelley | 1 | 2 |
| Michael Tomlinson | Dr. Keith Fecteau | Republican Congressman | 1 | 1 |
| Nick Offerman | Rog | Jerry | 1 | 1 |
| Pat Skipper | Carl Dayton | Senator Jimmy Hoebuck | 1 | 1 |
| Robert Picardo | Abraham Zimble | E. Bradford Shelton | 1 | 1 |
| Rosalind Chao | Dr. Theresa Chow | Jane Gentry | 1 | 1 |
| Sam Jaeger | Mr. Urman | Bill Kelley | 1 | 1 |
| Sara Botsford | Mrs. Calder | Jenny McGarry | 1 | 1 |
| Scott Lawrence | Children's Services Rep | Congressional Staffer | 1 | 1 |
| Sid Conrad | Dosier, Lou | Ed Ramsey | 2 | 1 |
| Troy Ruptash | Dave Fern | Scott Tate | 1 | 1 |
| Wayne Wilderson | Dr. Claypool | Senator's Aide | 1 | 1 |
| William Lucking | Kenny Brannigan | Bobby Russo | 1 | 1 |
| Gina Hecht | Radiology Tech | Julie | 2 | 1 |
| Ned Schmidtke | Cal | Admiral, Industry Leader | 1 | 2 |
| Richard Riehle | Mandrake Patient | Officer Jack Sloan | 1 | 2 |
| Ted Marcoux | Derek Fossen | Major Tate | 2 | 1 |
| Audrey Wasilewski | Officer Wetterling | Janice Trumbull | 1 | 1 |
| David Hornsby | Strauss | Fred | 1 | 1 |
| Gregg Daniel | Mr. Powell | Steve Adamley | 1 | 1 |
| Jacqueline Kim | Linda Reed | Lt. Emily Lowenbrau | 1 | 1 |
| James DuMont | Clemens | Major Thompson | 1 | 1 |
| James Keane | Workman | Registrar | 1 | 1 |
| John Kapelos | Mr. Irby | Seymour Little | 1 | 1 |
| Kathleen Garrett | Mrs. Meeker | Congresswoman | 1 | 1 |
| Merrin Dungey | Daphina | Daisy Reese | 1 | 1 |
| Michael Cavanaugh | Suzanne's Dad | Pharmaceutical Executive | 1 | 1 |
| Michael Chieffo | Dr. Harris | Head of FEMA | 1 | 1 |
| Michael Reilly Burke | Dick White | Bill Brewer | 1 | 1 |
| Natsuko Ohama | Judge M. Moses | Dr. Gwendolyn Chen | 1 | 1 |
| P.J. Byrne | Ken the Kiosk Man | David Orbitz | 1 | 1 |
| Patrick Breen | Felix | Kevin Kahn | 1 | 1 |
| Patrick Fischler | Chamber Tech | Walter Sprout | 1 | 1 |
| Rachel Singer | Sheila O'Brien | Marge | 1 | 1 |
| Raynor Scheine | Mr. Garland | Homeless Man | 1 | 1 |
| Robert Knepper | Keith Reynolds | Morgan Ross | 1 | 1 |
| Yolanda Lloyd Delgado | Elena Tabajas | Terri | 1 | 1 |
| Steven Anderson | Dr. Davitch | Daniel Rubin | 2 | 1 |
| Vernée Watson | April Wilson | Nurse | 2 | 1 |
| Al Fann | Mr. Chamberlain | Rep. Joe Willis | 1 | 1 |
| Chris Coppola | Cop | Howard | 1 | 1 |
| Clyde Kusatsu | Review Board Doctor #1 | Joe | 1 | 1 |
| David Barrera | Felix Hernandez | Jorge Santos | 1 | 1 |
| Don Perry | Dr. Stan Breedlove | Muriel Keith | 2 | 1 |
| Gregory Itzin | Burn Doctor | State Department Representative | 1 | 1 |
| Herb Mitchell | Priest | Justice | 1 | 1 |
| Jay Underwood | Mr. Burke | Congressman Christopher Wick | 1 | 1 |
| John F. O'Donohue | Mr. Goodwin | Mr. Koveleskie | 1 | 1 |
| Larry Brandenburg | Mr. Lensky | Senator Michael Jackson | 1 | 1 |
| Lisa Darr | Nadine Wilkes | Becca | 1 | 1 |
| Madison Mason | Clive King | Admiral Hackett | 1 | 1 |
| Michael Gaston | U.S. Marshal Rick Cromley | Eric Hayden | 1 | 1 |
| Michael Spound | Dwayne's Father | Vinick's Doctor | 1 | 1 |
| Nicholas Cascone | Howard Mills | Loomis | 1 | 1 |
| Nicki Micheaux | Mrs. Williams | Muriel | 1 | 1 |
| Paul Eiding | Kaminski | Labor Lawyer | 1 | 1 |
| Paul Perri | Monty | Steve Joyce | 1 | 1 |
| Peter MacKenzie | Mr. Pasbalas | George Rohr | 1 | 1 |
| Scott Klace | Chris Halpern | Democratic Congressional Campaign Committee Rep. | 1 | 1 |
| Stephen Lee | Mr. Dressler | Registered Voter | 1 | 1 |
| Tegan West | Construction Boss | Peter | 1 | 1 |
| Tobin Bell | Dr. Gary Wertz | Colonel Whitcomb | 1 | 1 |
| Tony Lee | Fah | Jai Yung Ahn | 1 | 1 |
| Pamela Gordon | Regina | Woman in Bar | 2 | 1 |
| Amanda Carlin | Librarian | Hillary Toobin | 1 | 1 |
| Basil Wallace | Mr. Campbell | McKonnen Loboko | 1 | 1 |
| Bellamy Young | Grace | MaryLou Meriwether | 1 | 1 |
| Bernard White | Addict seeking Rapid Detox | Dr. Essan Mohebi | 1 | 1 |
| Brent Hinkley | Fred Hopper | Professor Donald Huke | 1 | 1 |
| Christopher Wynne | Resident | Edgar Drumm | 1 | 1 |
| Eyal Podell | Sammo | Michael Gordon | 1 | 1 |
| Jamie McShane | Josh Rushing | Dr. Hardin | 1 | 1 |
| Jeffrey DeMunn | Treatment Center Doctor | Kenneth Sean O'Neal | 1 | 1 |
| Kenneth Kimmins | Mr. Spevacek | General Stanley | 1 | 1 |
| Kevin West | Robert Sanders | Randy Wysniewsky | 1 | 1 |
| Mark Hutter | Mark's Doctor | Rep. Erickson | 1 | 1 |
| Mark Moses | Mr. Marks | Donald Richter | 1 | 1 |
| Megan Cavanagh | Darlene | Voting Shortcut | 1 | 1 |
| Miguel Sandoval | Mr. Perez | Victor Campos | 1 | 1 |
| Paul Collins | Dr. Norm Middleton | Senator Sam Wilkinson | 1 | 1 |
| Peter Scolari | Kyle Evans | Jake Kimball | 1 | 1 |
| Ray Baker | Durant | Jonathan Lydell | 1 | 1 |
| Richard Tanner | Dad | Joe Fox | 1 | 1 |
| Seth Adkins | Benny Miles | Cody Zucker | 1 | 1 |
| Vince Grant | Jeff Woodman | Gil Siberly | 1 | 1 |
| Wallace Langham | Dr. Melvoin | Terry Anders | 1 | 1 |
| Michael Bryan French | Dr. MacGruder | Hospital Administrator | 2 | 1 |
| Art Chudabala | Greg | Peter Lien | 1 | 1 |
| Austin Tichenor | Mr. Sumpter | Raymond Burns | 1 | 1 |
| Eric Lange | Rod Stillman | Paul Tyminski | 1 | 1 |
| Eugene Alper | Boris | Roman Mindeli | 1 | 1 |
| Evgeniy Lazarev | Ivo Guter | Vassily Kononov | 1 | 1 |
| Henry G. Sanders | Phillip | Ambassador Tiki | 1 | 1 |
| James Lashly | Eddie | Canadian Ambassdor | 1 | 1 |
| Jerry Kernion | Bartender | The Driver | 1 | 1 |
| John Lafayette | Harold Anderson | Dr. Louis Foy | 1 | 1 |
| John Rubinstein | Dr. Kenner | Senator Andy Ritter | 1 | 1 |
| Ming Lo | Lindsey Jang | Yahlin | 1 | 1 |
| Ron Dean | Uncle Joey | Tom Broderick | 1 | 1 |
| Wayne Duvall | Umpire | Bill Parsons | 1 | 1 |
| Allan Kolman | Ed Minyard | Steven Thomas | 1 | 1 |
| Allan Wasserman | Mr. Goldstein | Donald McKittridge | 1 | 1 |
| Arye Gross | Kevin | Dr. Glazer | 1 | 1 |
| Marlene Forte | Mrs. Gonzalez | Secret Service Agent Linda | 1 | 1 |
| Maz Jobrani | Henry Aquino | Prince Bitar | 1 | 1 |
| Paul Vincent O'Connor | tbd | Laney | 1 | 1 |
| Richard Fancy | Mr. Thomas | Congressman | 1 | 1 |
| Richard Penn | Dave Donovan | Blakely | 1 | 1 |
| Shelley Robertson | Tanya Phillips | Brenda Burke | 1 | 1 |
| Steven Gilborn | Dr. Randall | Rep. Paul Dearborn | 1 | 1 |
| Thom Gossom, Jr. | Mr. Davis | Ted Mitchell | 1 | 1 |
| Victor Raider-Wexler | Vascular Doctor | Bernie | 1 | 1 |
| Armin Shimerman | Levine | Richard III | 1 | 1 |
| Carrie Snodgress | Mrs. Lang | Mrs. Martha Rowe | 1 | 1 |
| David Clennon | Jared Morgan | Vinick's Attorney | 1 | 1 |
| Diana Douglas | Bertha Mendenhall | Libby Lassiter | 1 | 1 |
| Jim Ortlieb | Cook | Dr. Keller | 1 | 1 |
| Lou Beatty, Jr. | Dexter Jenkins | Wilson Burke | 1 | 1 |
| Lucinda Jenney | Allison | Karen Kroft | 1 | 1 |
| Stanley Kamel | Dr. Fin Loech | Stanley | 1 | 1 |
| John Short | Dr. Schlansky | Riley Sheets | 1 | 1 |
| Blue Deckert | Watch Commander | Congressman Borden | 1 | 1 |
| Ellis E. Williams | McClintock | Algiss Skyler | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.