All 209 actors in both ER and Frasier
209 actors have appeared in both ER and Frasier, across 595 episodes. The most-credited is Tom McGowan, Joe Bernero in ER and Kenny Daly in Frasier.
| Actor | In ER | In Frasier | Eps | Eps |
|---|---|---|---|---|
| Tom McGowan | Joe Bernero | Kenny Daly | 2 | 41 |
| William H. Macy | Dr. David Morgenstern | Ralph | 31 | 1 |
| Patrick Kerr | George Deakins | Noel Shempsky | 2 | 20 |
| Luck Hari | Lakshmi, OB Nurse | Waitress | 2 | 10 |
| Stanley Tucci | Dr. Kevin Moretti | Morrie | 10 | 1 |
| Gina Ravera | Dr. Bettina DeJesus | Waitress | 13 | 1 |
| Marg Helgenberger | Karen Hines | Emily | 5 | 1 |
| Bette Rae | Mrs. Gottschuck | Elizabeth | 1 | 4 |
| Glenne Headly | Dr. Abby Keaton | Gretchen | 9 | 1 |
| Penny Johnson Jerald | Nurse Practitioner Lynette Evans | Carol | 9 | 1 |
| Bill Gratton | Joe McGinnis | Leo | 1 | 3 |
| Ron Dean | Uncle Joey | Frank | 1 | 3 |
| Scott Michael Campbell | EMT Reilly Brown | Mr. Rugley | 7 | 1 |
| Brian Klugman | Russell | Kirby | 1 | 6 |
| Amy Madigan | Mary Taggart | Maggie | 2 | 1 |
| Claire Yarlett | Claudia Olson | Vicky | 1 | 2 |
| Cynthia LaMontagne | Paula McKenzie | Annie | 1 | 2 |
| John LaMotta | Ivan Gregor | Duke | 4 | 2 |
| Lindsay Crouse | Dr. Anna Castiglioni | Peg | 1 | 2 |
| Lisa Darr | Nadine Wilkes | Laura Paris | 1 | 2 |
| Michael Whaley | Mr. Busey | Pete | 1 | 2 |
| Rick Cramer | McCormick, Officer O'Bannon | Ranger | 2 | 1 |
| Stephanie Faracy | Angie | Mimi | 1 | 2 |
| Tom Chick | Weissbroot | Waiter | 1 | 2 |
| Tony Carreiro | Brent Smythe | Joe DeCarlo | 1 | 2 |
| Charlayne Woodard | Angela Gilliam | Arleen | 7 | 1 |
| Allison Mackie | Clair Wilkes | Adelle Childs | 1 | 1 |
| Cindy Lu | Chinese Woman | Reporter | 1 | 1 |
| John Rubinstein | Dr. Kenner | Philip Hayson | 1 | 1 |
| Ken Magee | Security Guard Manager | Guard | 1 | 1 |
| Michael McShane | Hugo | Frank | 1 | 1 |
| Paul Kent | Morgan | Dr. Sternstein | 1 | 1 |
| Piper Laurie | Sarah Ross | Marianne, Mrs. Mulhern | 2 | 2 |
| Tom Irwin | Gabriel Milner | Frank | 1 | 1 |
| Željko Ivanek | Bruce Resnick | Dr. Arnold Shaw | 1 | 1 |
| Lois Smith | Gracie | Moira | 4 | 1 |
| Valerie Mahaffey | Joi Abbott | Peggy | 4 | 1 |
| Benjamin Brown | Cop, Lab Tech | Stage Manager | 2 | 1 |
| Lisa Waltz | Mrs. Wimbur | Tricia | 1 | 2 |
| Pamela Gordon | Regina | Marvella | 2 | 1 |
| Rosemary Clooney | Mary Cavanaugh / Madame X | Gladys | 2 | 1 |
| Suzanne Cryer | Toni Stillman | Denise Dawson | 1 | 2 |
| Marcelo Tubert | Galloway | Jorge | 3 | 1 |
| Andre Rosey Brown | Sick Guy | Prisoner | 1 | 1 |
| Blair Brown | Dr. Vicki Ford | Jill | 1 | 1 |
| Bradley Whitford | Sean O'Brien | Stu | 2 | 1 |
| Celia Weston | Sister Maureen Chapman | Sue | 1 | 1 |
| Charlotte Ross | Angel | Monica | 1 | 1 |
| Dale Dickey | Mrs. Price | Mrs. Grant | 1 | 1 |
| Jeff Perry | Officer Mitch Palnick | John Mitchell | 1 | 1 |
| Kathryn Joosten | Lois | Vera | 1 | 1 |
| Kendall Schmidt | Damian | Young Frasier | 1 | 1 |
| Kevin Weisman | Glenn Krakowski | Painter | 1 | 1 |
| Lamont Thompson | Paul GIlliam | Delivery Man | 1 | 1 |
| Lisa Edelstein | Aggie Orton | Caitlin | 1 | 1 |
| Lombardo Boyar | Morris Campbell | Delivery Man | 1 | 1 |
| Michael McFall | Water Truck Driver | Messenger | 1 | 1 |
| Michael Weston | Rafe Hendricks | Ice Sculptor | 2 | 1 |
| Nancy Stafford | Alan's Mom | Claire Barnes | 1 | 1 |
| Pierre Epstein | Dr. Bradley | Ettienne | 4 | 1 |
| Ray Liotta | Charlie Metcalf | Bob | 1 | 1 |
| Rebeccah Bush | Allison Wood | Kimberly Egan | 1 | 2 |
| Robert Prosky | Wayne Rutley | T.H. Houghton | 1 | 1 |
| Sarah Shahi | Tara King | Leila the Reservationist | 1 | 1 |
| Scott Atkinson | Blake | Clive | 1 | 1 |
| Scott MacDonald | Ambulance Driver, Detective | Henry | 2 | 1 |
| Sharon Madden | Risberg | Mrs. Woodson | 1 | 1 |
| Tom Troupe | Tancred Baumgartner | Minister | 1 | 1 |
| John Prosky | Mr. Brooks | Preston | 4 | 1 |
| Gregory Wagrowski | Walton, Herm Bullard | Man in Hospital | 3 | 1 |
| Dawn McMillan | Dr. Samantha Ewing | Waitress | 1 | 2 |
| Helen Geller | Jean, Mrs. Reynolds | Sister Joselia | 2 | 1 |
| Steven Anthony Lawrence | John Thomas Frum | Jason White, Kid | 1 | 2 |
| Alan Wilder | Ottley | Leo | 1 | 1 |
| Alyson Reed | Ginny | Cindy Carruthers | 1 | 1 |
| Bellamy Young | Grace | Lisa | 1 | 1 |
| Biff McGuire | Ralph Pooler | Mr. Smolenski | 1 | 1 |
| Brian Cousins | Allman | Gunnar | 1 | 1 |
| Edward James Gage | Orderly | Bartender | 1 | 1 |
| Gene Lythgow | Cop | Maitre'd | 1 | 1 |
| Grace Phillips | Mrs. Brower | Nancy | 1 | 1 |
| Harris Laskawy | Siebert | Moving Man | 1 | 1 |
| Jack Wallace | Mr. Reynolds | Joe | 1 | 1 |
| Jennifer Williams | Joan | Woman in Hall | 1 | 1 |
| Joan McMurtrey | Birdwatcher | Heather | 1 | 1 |
| Joseph Sikora | Riley | Man in Bar | 1 | 1 |
| Julie Dretzin | Shelly | Janis | 1 | 1 |
| Karen Hensel | Keller | Bethany | 1 | 1 |
| Kipp Shiotani | Bike Guy | Delivery Guy | 1 | 1 |
| Lin Shaye | Margaret | Anne | 1 | 1 |
| Linda Kerns | Mrs. Bohlmeyer | Policewoman | 1 | 1 |
| Lorraine Toussaint | Yolanda | Nurse | 1 | 1 |
| Marco Rodríguez | Agent Serena | Leo | 1 | 1 |
| Miguel Pérez | Santiago Escalona | Carlos Del Gato | 1 | 1 |
| Rob Moore | Inseminator | B.K. | 1 | 1 |
| Robert Picardo | Abraham Zimble | Charlie Koechner | 1 | 1 |
| Teri Garr | Celinda Randlett | Nancy | 1 | 1 |
| Valerie Curtin | Marie Barclay | Mrs. Warren | 1 | 1 |
| Vaughn Armstrong | Greg Mitchell | Tony | 1 | 1 |
| Juanita Jennings | ICU Doctor, Mrs. Davis | Suzy | 2 | 1 |
| Stacey Travis | Detective Weller | Cindy | 2 | 1 |
| Stephon Fuller | Transport Tech Jim | Jason | 1 | 2 |
| Armando Molina | Sgt. Pete Jackson | Mario | 1 | 1 |
| Cameron Bowen | Marten | Young Frasier | 1 | 1 |
| Caroline Lagerfelt | Andrea | Glinka | 1 | 1 |
| David Aaron Baker | Rufus Taylor | Waiter | 1 | 1 |
| David St. James | Kaplan | Admissions Officer | 1 | 1 |
| Francis Guinan | Police Negotiator | Ted Fisher | 1 | 1 |
| Gloria LeRoy | Beth Lang | Mrs. Smolenski | 1 | 1 |
| Gregory North | Dr. Neiser | Doorman | 1 | 1 |
| Hank Stratton | Curt Oberg | Andrew Lloyd | 1 | 1 |
| Holmes Osborne | Dr. Sayers | Principal | 1 | 1 |
| Jay Harik | Seiger | Sales Clerk | 1 | 1 |
| Jeff Corbett | Mike Dodds | John Coughlin | 1 | 2 |
| John Kapelos | Mr. Irby | Policeman | 1 | 1 |
| Joseph Kell | Drunk Driver | Doctor | 1 | 1 |
| Judith Scott | Mandy Smith | Colleen | 1 | 1 |
| Kelvin Yu | Rondo | Copy Guy | 1 | 1 |
| Kevin Brief | Walter Brosnich | Cop | 1 | 1 |
| Lauren Cohn | Kelly | Orderly | 1 | 1 |
| Lincoln Kilpatrick | Chet Fulton | Artie | 1 | 1 |
| Lisa Arning | Nikki | Nurse | 1 | 1 |
| Lisa K. Wyatt | Transpo Tech | Sonics Fan | 1 | 1 |
| Mario Soto | SWAT Guy | Waiter | 1 | 1 |
| Miguel Sandoval | Mr. Perez | Mr. Martin | 1 | 1 |
| Miles Marsico | David Bradley | Johnny | 1 | 1 |
| Pamela Kosh | Emma Scott | Deirdre Sauvage | 1 | 1 |
| Philip Casnoff | Dr. Dan Litvak | Dr. Bernard Gadston | 1 | 1 |
| Ray Porter | Sam Broder | Dwayne | 3 | 1 |
| Sal Rendino | Mohan | Customs Officer | 2 | 1 |
| Stephanie Dunnam | Dr. McLucas | Mrs. Newman | 2 | 1 |
| Stephen Spinella | Henry Lotery | Randall Schoonover | 1 | 1 |
| Terri Hoyos | Mrs. Corvalan | Hostess | 1 | 1 |
| David Noroña | MRI Tech | Lance | 1 | 1 |
| Delaina Mitchell | Nicole | Jessica | 1 | 1 |
| Dendrie Taylor | Mrs. Knoll | Paris | 1 | 1 |
| Fiona Hale | Dorothy Holmes | Mrs. Hawkins | 1 | 1 |
| Heidi Mokrycki | Mallory | Plum Sanders | 1 | 1 |
| Ivory Ocean | Mr. Preston | Bartender | 1 | 1 |
| Jillie Mack | tbd | Charlotte | 1 | 1 |
| Jon Curry | Karl | Mike | 1 | 1 |
| Kay E. Kuter | Mr. Seaton | Wino | 1 | 1 |
| Lilyan Chauvin | Nurse Edna | Mama | 1 | 1 |
| Linda Porter | Inga Paulson | Mary | 1 | 1 |
| Marilyn O'Connor | Mrs. Skapinski | Albert's Wife | 1 | 1 |
| Michael Vira | Chuck Martinez | Contestant | 1 | 1 |
| Nathan Davis | Anton Novotny | Otto | 1 | 1 |
| Patrick Breen | Felix | Phillip | 1 | 1 |
| Rocky McMurray | Sergeant Myers | Shangri-lino | 1 | 1 |
| Roger Fan | Student #15 | Waiter | 1 | 1 |
| Susan Merson | Mrs. Blum | Woman in Cafe | 1 | 1 |
| Wendell Wright | Keegan | Fred | 1 | 1 |
| Cameron Dye | Damian's Dad | Nigel Moon | 1 | 2 |
| Annie LaRussa | Sylvie | Susan | 1 | 1 |
| Candace Edwards | Lacy | Monique | 1 | 1 |
| Deborah Lacey | Det. Tincreed | Customer | 1 | 1 |
| Dennis Cockrum | Little League Player's Father | Red | 1 | 1 |
| Doug Budin | T.V. Producer | Clerk | 1 | 1 |
| Garett Maggart | Lt. Ottenson | Bruce | 1 | 1 |
| Ian Patrick Williams | Supervisor | Barfly #2 | 1 | 1 |
| James Kiriyama-Lem | Dr. Mitsuma | Tenant | 1 | 1 |
| Josh Wise | Rick | Warren | 1 | 1 |
| Lauri Johnson | Oncology Nurse | Mrs. Gablyczyck | 1 | 1 |
| Marcus Folmar | Foreman | Policeman | 1 | 1 |
| Mary-Joan Negro | Emma Hadley | Joanne | 1 | 1 |
| Matthew Yang King | Rick | Thad | 1 | 1 |
| Melora Marshall | Mrs. Logan | Female Fan | 1 | 1 |
| Nancy Linari | Elizabeth Puro | Elaine Hensley | 1 | 1 |
| Patricia Fraser | Flossie Hutton | Marjorie | 1 | 1 |
| Peggy Miley | Bird Lady | Bernice Brisco | 1 | 1 |
| Peter Haskell | Fred Thunhurst | Bob Vernon | 1 | 1 |
| Randy Kovitz | Dr. Black | Fan | 1 | 1 |
| Rick Schatz | Max Fritzler | Busboy | 1 | 1 |
| Tegan West | Construction Boss | Jack | 1 | 1 |
| Wayne Wilderson | Dr. Claypool | Teddy | 1 | 1 |
| Hawthorne James | Hawthorne | Bill | 2 | 1 |
| B.J. Ward | Romano's Post-Op Nurse | Diane Murchie | 1 | 1 |
| Ben Livingston | Mr. Gattney | Stage Manager | 1 | 1 |
| Bernard Zilinskas | Sprooner | Dennis | 1 | 1 |
| Damara Reilly | Estelle | Estelle | 1 | 1 |
| Googy Gress | Head Lac | Ned | 1 | 1 |
| Harve Presnell | Mr. Venema | Mike Shaw | 1 | 1 |
| James Gleason | Garrett Palsey | Ed | 1 | 1 |
| Jean Sincere | Gladys | Old Daphne | 1 | 1 |
| Jodi Taffel | Surgical Nurse | Nurse | 1 | 1 |
| Kathe Mazur | Kate Nelson | Beverly | 1 | 1 |
| Marilyn Child | Nun | Gretchen Koontz | 1 | 1 |
| Raye Birk | Mr. Hartley | Walt Twitchell | 1 | 1 |
| Tom Astor | Leahy | Waiter | 1 | 1 |
| Tony Abatemarco | Loan Officer | Jimmy | 1 | 1 |
| Alice Dodd | Mrs. Sumpter | Surgical Nurse | 1 | 1 |
| Cyndi Martino | Jane | Board Member | 1 | 1 |
| Donald Sage MacKay | Detective Lash | Eduardo | 1 | 1 |
| John David Conti | Tony Pipitone | Mr. Douglas / Donny's Dad | 1 | 1 |
| Phyllis Flax | Regina Hunter | Florence | 1 | 1 |
| Al Fann | Mr. Chamberlain | Jimmy | 1 | 1 |
| Darion Basco | Justin Chang | Zombie #2 | 1 | 1 |
| Karl T. Wright | Dr. Norris | Producer | 1 | 1 |
| Kila Kitu | Sciatica Lady | Motorist #4 | 1 | 1 |
| Morgan Nagler | Natalie Logan | Kristi | 1 | 1 |
| Pat Skipper | Carl Dayton | Gary | 1 | 1 |
| Steve Stapenhorst | Thorn | Board Member | 1 | 1 |
| William Turner | Jamal | Kid #2 | 1 | 1 |
| J.D. Cullum | Munchausen Patient | Donald | 1 | 1 |
| Janice Kent | Mrs. Skinner | Neighbor | 1 | 1 |
| Shannon Cochran | Mrs. Klingman | Bank Manager | 1 | 1 |
| Michael Krepack | Mason | Toddler Frasier | 1 | 1 |
| Reggie Jordan | Street Sweeper | Bank Officer | 1 | 1 |
| Bridget Sienna | Hernandez | Bank Teller #2 | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.