All 182 actors in both The Practice and The West Wing
182 actors have appeared in both The Practice and The West Wing, across 321 episodes. The most-credited is Elisabeth Moss, Jessica Palmer in The Practice and Zoey Bartlet in The West Wing.
| Actor | In The Practice | In The West Wing | Eps | Eps |
|---|---|---|---|---|
| Elisabeth Moss | Jessica Palmer | Zoey Bartlet | 1 | 25 |
| Gary Cole | Defense Attorney Solomon Tager, Attorney Brian Seabury | Vice President Bob Russell | 3 | 21 |
| Teri Polo | Sarah Barker | Helen Santos | 5 | 18 |
| Ron Silver | Attorney John Mockler | Bruno Gianelli | 1 | 19 |
| Marlee Matlin | Sally Berg | Joey Lucas | 1 | 17 |
| Richard McGonagle | Judge Patrick Wilcox | Senator Warren | 16 | 1 |
| James Pickens, Jr. | Detective Mike McKrew | Washington D.C. Mayor | 15 | 1 |
| Herb Mitchell | Judge Rodney White | Justice | 12 | 1 |
| Anna Deavere Smith | D.A. Kate Brunner | Nancy McNally | 4 | 19 |
| Kate Burton | A.D.A. Susan Alexander | Sarah Brainerd | 9 | 1 |
| Steve Ryan | Detective Alan Slezak | Secretary of Defense Miles Hutchinson | 1 | 16 |
| Steven Eckholdt | A.D.A. Chris Kelton | Doug Westin | 3 | 5 |
| Michael O'Neill | Judge Robert Temple | Secret Service Agent Ron Butterfield | 1 | 14 |
| Joanna Gleason | Henrietta Lightstone | Jordon Kendall | 2 | 5 |
| Natalija Nogulich | Judge Stevens | Israeli Ambassador Shira Galit | 4 | 3 |
| Arye Gross | Rabbi Daniel Warner, Attorney John Franklin | Dr. Glazer | 5 | 1 |
| Gibby Brand | Judge William McGough | Adam Kent | 5 | 1 |
| Thomas Kopache | Dr. Harold Manning, Judge Morris Seymour, Mr. Schramm | Bob Slatterly | 3 | 14 |
| Ryan Cutrona | Dr. Patrick Fine, FBI Coroner George Wall | CIA Director George Rollie | 5 | 6 |
| Adam Arkin | Attorney Albert Ginsberg | Dr. Stanley Keyworth | 1 | 4 |
| Dakin Matthews | Judge William Aldrich, Judge Courtney Lander | Simon Blye | 4 | 1 |
| Clark Gregg | Bob McGrath | FBI Special Agent Michael Casper | 1 | 8 |
| Kathleen York | Sharon | Andrea Wyatt | 1 | 15 |
| Steven Flynn | D.A. Martin Toomey | Mark Brookline | 3 | 1 |
| Steven Culp | A.D.A. Emmanuel Kupcheck, Attorney Alldredge | Speaker of the House Jeff Haffley | 2 | 9 |
| John Larroquette | Joey Heric | Lionel Tribbey | 6 | 1 |
| Lisa Edelstein | Diane Ward | Brittany "Laurie" Rollins | 2 | 5 |
| Steven Gilborn | A.D.A. Gavin Bullock | Rep. Paul Dearborn | 6 | 1 |
| John Aylward | Federal Judge Kendall Marcott, Chief District Court Judge W. Frankle, Judge in Rydell Hearing | Barry Goodwin | 4 | 6 |
| Gregory Alan Williams | ADA Jeffrey Scott | Robbie Mosley | 1 | 8 |
| Philip Baker Hall | Judge Joseph Vinocour | Senator Matt Hunt | 4 | 2 |
| Thom Barry | Judge B. Watson | Congressman Mark Richardson | 3 | 3 |
| Charles Walker | Judge Keith, Judge M. Frankel | Oncologist | 4 | 1 |
| Ellis E. Williams | Kevin Beel | Algiss Skyler | 4 | 1 |
| Tony Amendola | Dr. Bernard Gorman, Dr. Alvin Traub, Dr. Emmanuel Willis | Qumari U.N. Ambassador Ali Nissir | 4 | 1 |
| Željko Ivanek | A.U.S.A. Steven Sanders, Assistant District Attorney General James McGovern, Matthew Davies | Steve Atwood | 3 | 2 |
| Austin Tichenor | A.D.A. Kenneth Tisbury | Raymond Burns | 5 | 1 |
| Gregory Itzin | Attorney Mark Grundel, Attorney Walter Pyne, D.A. Michael Stanfield | State Department Representative | 5 | 1 |
| Michael Bofshever | Joshua Berry, Walter Crewson | Kagan | 3 | 1 |
| Michael Nouri | Dwight Haber | Roy Turner | 1 | 1 |
| H. Richard Greene | Judge Paul Stewart | Robert Royce | 1 | 6 |
| Melinda McGraw | Marcie Bartos | Jane Braun | 1 | 4 |
| Armin Shimerman | Judge Garth Moskin | Richard III | 2 | 1 |
| CCH Pounder | Helene Washington | Deborah O'Leary | 2 | 1 |
| George Coe | Judge Harold Waters | Senator Howard Stackhouse | 1 | 2 |
| Alan Dale | Judge Robert Brenford | Mitch Bryce | 2 | 2 |
| Peter Michael Goetz | Dr. Dennis Murphy | Paul Hackett | 3 | 1 |
| Rebecca Creskoff | Dr. Jeannie Reynolds | Sarah Jordan | 3 | 1 |
| Ted McGinley | Michael Hale | Mark Gottfried | 1 | 3 |
| Robert David Hall | Judge Bradley Michaelson | David Nessler | 4 | 1 |
| Annie Corley | Doctor | Mary Marsh | 2 | 2 |
| Benjamin Brown | Officer | Mike | 1 | 3 |
| Dylan Baker | Senator Keith Ellison | Attorney General Alan Fisk | 2 | 1 |
| James Eckhouse | Attorney Anthony Selig | Rep. Bud Wachtell | 1 | 1 |
| Ken Howard | Attorney Raynsford Bradford, Senator Frank Patanki | Judge Peyton Cabot Harrison III | 2 | 1 |
| Kurt Fuller | Attorney David Lawrence | SitRoom Civilian Advisor | 1 | 2 |
| Mark L. Taylor | Dr. Reichal, Judge Andrew MacDonald, Wiggins' Psychiatrist | Steve Rorsche | 3 | 1 |
| Robert Curtis Brown | Attorney John Wicker, Scott Simpson | Jamie Hotchkiss | 2 | 1 |
| James Handy | Lieutenant Paul Stewart, Philly Sidlow | Rep. Joseph Bruno | 2 | 2 |
| Jim Jansen | Attorney Richard Hart, Attorney Ryan Hall, Stephen Gould | Bill Fisher | 3 | 1 |
| John de Lancie | Dr. Walsh, Walter Bannish | Al Kiefer | 2 | 2 |
| John Rubinstein | Judge Joseph Papp | Senator Andy Ritter | 3 | 1 |
| Lee Garlington | Attorney | Alana Waterman | 1 | 3 |
| Michael Kagan | Judge Keller, Peter Martini | FBI Director George Arnold | 2 | 2 |
| Robin Thomas | Dr. Steven Barrett, Harry Duvall, Robert Adler | Senator Jack Enlow | 3 | 1 |
| Clyde Kusatsu | Judge Stephen Chin | Joe | 2 | 1 |
| John P. Connolly | Warden Steve Langston | Matt Kelley | 1 | 2 |
| Larry Brandenburg | Judge Steven Winwood | Senator Michael Jackson | 2 | 1 |
| Leon Russom | Brian Kearns | Network President | 2 | 1 |
| Randy Oglesby | Dr. Feldman, Judge Kelly White | Alcoholic Politician | 2 | 1 |
| Tom Bower | John Pierce | General Barrie | 2 | 1 |
| Tim Lounibos | Dr. Michael Wang | Colonel Leahy | 2 | 3 |
| Amy Aquino | Judge Louise Moreno | Becky Reeseman | 1 | 1 |
| Christian Clemenson | Barry Wall | Evan Woodkirk | 1 | 1 |
| Cliff DeYoung | Attorney Randall West | Congressman Kimball | 3 | 1 |
| John Carroll Lynch | Dr. Robert Larson | Jack Reese | 1 | 1 |
| Len Cariou | Defense Attorney Stephan Weiland | Alan Damson | 1 | 1 |
| Michael Gaston | Roland Hubert | Eric Hayden | 1 | 1 |
| Michael Reilly Burke | Detective Kevin McCarley | Bill Brewer | 3 | 1 |
| Mitchell Ryan | Judge George Nelson | Senator Roland Pierce | 1 | 1 |
| Robert Picardo | Dr. Edmunds | E. Bradford Shelton | 1 | 1 |
| J. Patrick McCormack | Pierce Stanton | General Jimmy Wendall | 1 | 4 |
| Andy Umberger | A.D.A. Virgil Johnson | Cal Mathis | 1 | 2 |
| Carmen Argenziano | Attorney Horace Wright, Principal Gilbert | Leonard Wallace | 2 | 1 |
| Daniel Von Bargen | Detective Smiley | Ken Shannon | 1 | 2 |
| David Doty | Foreman, Judge Robert Bournes | Military Officer | 2 | 1 |
| Madison Mason | Attorney Jacob Hurwitz, FDA Doctor Herwitz | Admiral Hackett | 2 | 1 |
| Mary Mara | Dr. Jane Lefkowitz | Sherri Wexler | 2 | 1 |
| Michael Spound | Michael Berenson | Vinick's Doctor | 2 | 1 |
| Robert Clotworthy | Coroner, Judge Tyler Flynn | Tom | 2 | 1 |
| Spencer Garrett | A.D.A. Carter | Richard Will | 2 | 1 |
| Svetlana Efremova | Natasha Vjorka, Rena | Ludmilla Koss | 2 | 1 |
| Bruce French | Attorney Barry Pederson, Attorney General Walgren, Judge M. Walters | Bill Stark | 3 | 1 |
| Steve Rankin | Stephen Jamison | FBI Officer | 3 | 1 |
| Steven Anderson | Dr. Emerick, Dr. Barry Jacob | Daniel Rubin | 3 | 1 |
| Bonita Friedericy | Sandra Poole | Gail Addison | 1 | 2 |
| Brooks Almy | Julie Riley, Mrs. Carson | Tessa | 2 | 1 |
| Ed Begley Jr. | Dr. Emanuel Foster | Seth Gillette | 1 | 1 |
| Faran Tahir | Dr. Michael Shields | Manny | 1 | 2 |
| George Wyner | Rabbi Stewart Lewis | Congressman Simmel | 1 | 1 |
| James Hong | Min Wong | Chinese Ambassador David | 1 | 2 |
| John Cothran, Jr. | Chris Patterson | Civilian Advisor | 1 | 2 |
| Jordan Baker | Judge Cheryl Robbins | Dr. Cynthia Sayles | 1 | 1 |
| Marcelo Tubert | Darryl Stanton | Palestinian Prime Minister Saeb Mukarat | 1 | 3 |
| Mark Moses | Henry Winslow | Donald Richter | 1 | 1 |
| Nick Offerman | Charles Rossi | Jerry | 1 | 1 |
| Scott MacDonald | Detective Disaia | Cyrus Yolander | 1 | 1 |
| Ted Marcoux | Dennis Mills | Major Tate | 2 | 1 |
| Tim Guinee | Reverend Michael Crane | Steve Laussen | 1 | 1 |
| Vyto Ruginis | Jason Swoboda | Mitch | 1 | 1 |
| David Huddleston | Judge Richard Bender | Senator Max Lobell | 1 | 2 |
| Dean Norris | Detective | Steve Hodder | 1 | 2 |
| Dey Young | Elena Wharton | Congresswoman | 2 | 1 |
| Alfonso Freeman | EMP Perry Morris | Andrew Mackintosh | 1 | 1 |
| Charlotte Cornwell | Dr. Pickford | Nadia Kozlowski | 1 | 1 |
| Christopher Cousins | Ralph Alt | Congressman Thiele | 1 | 1 |
| James Keane | Michael Hallbrenner | Registrar | 1 | 1 |
| Jeff Perry | Randy Markham | Burt Ganz | 1 | 1 |
| Jeffrey DeMunn | Attorney Gordon Keene | Kenneth Sean O'Neal | 1 | 1 |
| John Billingsley | Revenue Officer Robert Schmitt | Dr. John Fallow | 1 | 1 |
| Kirsten Nelson | Judy Burke | Young Mrs. Dolores Landingham | 1 | 1 |
| Linda Gehringer | Ms. Bancock | Jennifer Lydell | 1 | 1 |
| Mark Blum | State Attorney Michael Scannel | Rep. Katzenmoyer | 1 | 1 |
| Nancy Linehan Charles | Maryann Reynolds | Oncologist | 1 | 1 |
| Scott Allan Campbell | D.A. | Grey Polk | 1 | 1 |
| Edmund L. Shaff | Judge John Kirkland | Bill Horton | 2 | 1 |
| Gerry Becker | Attorney, Hub News Attorney | Network President | 2 | 1 |
| Adrian Sparks | Dr. Maxwell Joseph | Dr. Wexler | 1 | 1 |
| Amy Stewart | Maddie Werner | Lisa Zimmer | 1 | 1 |
| Barbara Eve Harris | Judge Joan Limpert | Gretchen Tyler | 1 | 1 |
| Bill Cobbs | Arthur Turner | Alan Tatum | 1 | 1 |
| Bruce Weitz | D.A. Robert Webb | Senate Majority Leader | 1 | 1 |
| Daniel Zacapa | Mr. Tabbitt | Esteban 'Steve' Hernandez | 1 | 1 |
| David Brisbin | Byron | Ken | 1 | 1 |
| David Dunard | Judge in Rydell Hearing | Alcoholic Politician | 1 | 1 |
| Earl Boen | Dr. Broadman | Paulson | 1 | 1 |
| Holmes Osborne | Jeffrey Hyde | Congressman Peter Lillienfield | 1 | 1 |
| Lawrence O'Donnell | Judge Franklin Brown | Dr. Bartlet | 1 | 1 |
| Lawrence Pressman | Dr. Milton Leach, Russell Mathis | Ken Cochran | 2 | 1 |
| Matt Malloy | Mr. Robinson | Herb | 1 | 1 |
| Michael Holden | Joe Walsh | Network President | 1 | 1 |
| Ned Schmidtke | Dr. Donald Seidman | Admiral, Industry Leader | 1 | 2 |
| Pat Skipper | Officer Scott Guthrie | Senator Jimmy Hoebuck | 1 | 1 |
| Peter MacKenzie | D.A. Brunner | George Rohr | 1 | 1 |
| Scott Klace | Stephen Hatfield | Democratic Congressional Campaign Committee Rep. | 1 | 1 |
| Richard Riehle | Mr. Holt | Officer Jack Sloan | 1 | 2 |
| Amanda Carlin | Ms. Elder | Hillary Toobin | 1 | 1 |
| Bernard White | Ahmad Sharif | Dr. Essan Mohebi | 1 | 1 |
| Chris Ellis | Donald Blane | Congressman Fields | 1 | 1 |
| David Kelsey | Marvin Blaylock | Staff Sergeant Keltie | 1 | 1 |
| Dennis Haskins | Psychiatrist | CEO | 1 | 1 |
| Doug Ballard | Jack Carroll | Governor Edward Pratt | 1 | 1 |
| John Kapelos | Officer John Rydell | Seymour Little | 1 | 1 |
| Ken Lerner | Rabbi Sam Benzig | Congressman Marino | 1 | 1 |
| Kiersten Van Horne | Officer Cynthia Henderson | Jane Cleery | 1 | 1 |
| Michael Cavanaugh | Primate Center Director Kenneth Patterson | Pharmaceutical Executive | 1 | 1 |
| Michael Chieffo | Chris Varley | Head of FEMA | 1 | 1 |
| Shashawnee Hall | Officer Horton | Russell Angler | 1 | 1 |
| Stephen Markle | Forensic Pathologist | Commander Ruiz | 1 | 1 |
| Stephen Tobolowsky | Clyde Burrows | Dr. Max Milkman | 1 | 1 |
| Aaron Lustig | Attorney Michael King | Jerry Graham | 1 | 1 |
| Basil Hoffman | Attorney Art Hardiman | Congressman | 1 | 1 |
| Kristoffer Ryan Winters | Joel Carlington | Brian | 1 | 1 |
| Nicholas Pryor | Dr. Kloves | Special Prosecutor Clement Rollins | 1 | 1 |
| Nicki Micheaux | Security Guard Patricia Olah | Muriel | 1 | 1 |
| Paul Collins | Attorney Hendrick Walton | Senator Sam Wilkinson | 1 | 1 |
| Paul Eiding | Mr. Liston | Labor Lawyer | 1 | 1 |
| Paul Fitzgerald | Attorney Byron Powell | Casey Reed | 1 | 1 |
| Allan Wasserman | James Keplar | Donald McKittridge | 1 | 1 |
| Basil Wallace | A.D.A. Jerry | McKonnen Loboko | 1 | 1 |
| John Capodice | Joe Jacobs | Lenny | 1 | 1 |
| Wren T. Brown | Attorney Scott Layden | Man in Meeting | 1 | 1 |
| Austin Pendleton | Sam Feldberg | Barry Haskell | 1 | 1 |
| James Lashly | Joseph Butlington | Canadian Ambassdor | 1 | 1 |
| Ming Lo | Doctor No. 1 | Yahlin | 1 | 1 |
| Paul Vincent O'Connor | Attorney Milton Cados | Laney | 1 | 1 |
| Shawn Michael Patrick | Dr. Lyle | Gene | 1 | 1 |
| Fred Sanders | Roland Hoffstra | Ted | 1 | 1 |
| Richard Penn | Judge Wald | Blakely | 1 | 1 |
| John Short | Warren Snail | Riley Sheets | 1 | 1 |
| Lucinda Jenney | Angela Jamison | Karen Kroft | 1 | 1 |
| Randy Thompson | William Finnerty | CEO | 1 | 1 |
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Cast data from TVmaze, licensed CC BY-SA 4.0.