All 234 actors in both ER and Las Vegas
234 actors have appeared in both ER and Las Vegas, across 437 episodes. The most-credited is Camille Guaty, Mia in ER and Piper Nielsen in Las Vegas.
| Actor | In ER | In Las Vegas | Eps | Eps |
|---|---|---|---|---|
| Camille Guaty | Mia | Piper Nielsen | 1 | 16 |
| John Terry | Dr. David 'Div' Cvetic | Larry McCoy | 8 | 4 |
| Malaya Rivera Drew | Katie Alvaro | Shannon | 11 | 6 |
| Michael B. Silver | Dr. Paul Myers | Dr. Steve Levin | 12 | 4 |
| Matthew Glave | Dr. Dale Edson | Jason Decker | 15 | 1 |
| Joe Manganiello | Officer Litchman | Carson Stuart | 4 | 1 |
| Ernie Hudson | Colonel James Gallant | Bob Casey | 2 | 2 |
| James Earl | Elgin Gibbs | Little Fly | 4 | 2 |
| Joel McKinnon Miller | Mr. Emerson | Lyle Nubbin | 1 | 3 |
| Megan Cole | Pathologist Dr. Upton | Judge Jo-Ann Davidson | 7 | 1 |
| Wallace Langham | Dr. Melvoin | Julian Kerbis | 1 | 1 |
| Christina Hendricks | Joyce Westlake | Connie | 4 | 1 |
| Lyle Kanouse | Mitch | Judge Ferguson | 1 | 2 |
| Paul Adelstein | Hank Loman, Paul | Alex Brooks | 2 | 1 |
| Ransford Doherty | Randall James | Steve #2 | 1 | 2 |
| Brendan Patrick Connor | Paramedic Reidy | Gas Station Attendant | 13 | 1 |
| Michael McGrady | Fire Captain Davis | Detective Max Dillon | 1 | 3 |
| Sandrine Holt | Drew | Detective Jenny Cho | 1 | 3 |
| Dennis Boutsikaris | Dr. David Kotlowitz | Lance Marshall | 4 | 1 |
| Aimee Garcia | Leanne Lawler | Lizzie Posner | 1 | 1 |
| Bill Macy | Richard Gould | Sharkey Rosenthal | 1 | 1 |
| Christopher Wiehl | Mr. Lattimer | James Riley, Kyle Aldridge | 1 | 2 |
| Kelsey Oldershaw | Nurse Tess | Connie Beckner | 3 | 1 |
| Michael Cudlitz | Lang | Brian Carlton Venturi | 1 | 1 |
| Patrick Kilpatrick | Matthew Lindermulder | Louis Ambrose | 1 | 1 |
| Sheryl Lee Ralph | Gloria Gallant | Janet Ellis | 2 | 1 |
| Sonia Iris Lozada | Mrs. Lopez | Carmela The Maid | 1 | 2 |
| Amy Stewart | Linsey Cordova | Karen | 2 | 1 |
| Paul Collins | Dr. Norm Middleton | Dr. Hall | 1 | 2 |
| Christopher Cousins | Kyle Kolber | Chairman of Gaming Commission | 1 | 1 |
| David DeLuise | Brad Anderson | Tom | 1 | 1 |
| Dean Norris | Bomb Specialist Clark | Ray Brennan | 1 | 1 |
| Gloria LeRoy | Beth Lang | Mrs. Gruder | 1 | 1 |
| Lola Glaudini | Capt. Jen Whitley | A.J. Laveau | 1 | 1 |
| Peter Onorati | Officer Nick Napolitano | Andy Lamar | 1 | 1 |
| Tim Bagley | Archie Papion | Stan Putasca | 1 | 1 |
| Tom Paliferro | Drunk | Dispatcher | 1 | 1 |
| Wade Williams | Migraine Guy | Richard Allen Wesley | 1 | 1 |
| Iqbal Theba | Dr. Zogoiby | Parviz Silani | 4 | 1 |
| Bobby Nish | Officer Danny Yau | Charlie | 4 | 1 |
| Bodhi Elfman | Nicky | Steven | 1 | 1 |
| Bruce Gray | Carter Board member, Dr. Munch | Mr. Majellis | 2 | 1 |
| Dayo Ade | James Rollins | Cedric Barimba | 1 | 1 |
| Femi Emiola | Lena | Young Woman | 1 | 1 |
| Floyd Van Buskirk | Workman | Al Magrisi, Man in Wheelchair | 1 | 2 |
| Jon Gries | Defense Attorney Marty Nesmith | Greg Walker | 1 | 1 |
| Michael Adler | Marty, Rick | Dr. Falvey | 2 | 1 |
| Missy Yager | Nicole Woodman | Cynthia | 1 | 1 |
| Norma Michaels | Rose Franklin | Mrs. Finnegan | 1 | 1 |
| Rachel Boston | Beth Ackerman | Patsy | 1 | 1 |
| Robert Bagnell | Paxton | Brad Kern | 1 | 1 |
| Rochelle Aytes | Tamara | Carley | 1 | 1 |
| Sherman Howard | Mr. Schoenberger | Vanko | 1 | 1 |
| Taylor Nichols | Mr. Adams | Dr. Wilson | 1 | 1 |
| Troy Ruptash | Dave Fern | Rob Court | 1 | 1 |
| Michael C. Mahon | Joe | Ben Wilcox, Greg Randalls | 2 | 2 |
| Brad Grunberg | Masked Man | Brian Rogers | 1 | 2 |
| David Figlioli | Nolan | Henchman Robb | 1 | 2 |
| Edward James Gage | Orderly | Gambler, Man #2 | 1 | 2 |
| Verda Bridges | May Crawford | Housekeeper | 1 | 2 |
| Allan Wasserman | Mr. Goldstein | Jerry The Jeweler | 1 | 1 |
| Andrew Bowen | Andrew | Eric Bates | 3 | 1 |
| Brady Smith | Rod | Chad | 1 | 1 |
| Don Perry | Dr. Stan Breedlove | Clarence, Julio Carbonal | 2 | 2 |
| Jack Kehler | Jail Officer | Aaron Walker | 1 | 1 |
| Jackie Debatin | Judy | Lynn Finstad | 1 | 1 |
| Jillian Armenante | Tamara Gordon | Beth Lipshitz | 1 | 1 |
| Joey Naber | Santa Juan | R.P. Taylor | 1 | 1 |
| John Kapelos | Mr. Irby | Gabe GIllian | 1 | 1 |
| Kathleen Gati | Stacy Coleman | Galina | 1 | 1 |
| Kelvin Yu | Rondo | Larry | 1 | 1 |
| Mark Harelik | James | Hotel Traveler Magazine Critic | 1 | 1 |
| Mark Moses | Mr. Marks | Dr. Miles Marks | 1 | 1 |
| Michael Cavanaugh | Suzanne's Dad | Heyman | 1 | 1 |
| Robert Cicchini | Channel 5 Chopper Reporter | Elliot | 1 | 1 |
| Scott Atkinson | Blake | Phillip Corbin | 1 | 1 |
| Wayne Péré | Eric Farve | Larry Phelan | 1 | 1 |
| Bart Tangredi | Male Patron | Tech / Don The Maintenance Guy | 1 | 2 |
| Nick Jaine | Scrub Nurse | Paramedic | 1 | 2 |
| Roger Ranney | Officer Maser | Cook, Maintenance Worker | 1 | 2 |
| Rigo Sanchez | Vega | Bellboy #1, Bellhop, Security #1 | 1 | 3 |
| Benjamin King | Costi | Cynthia's Husband | 1 | 1 |
| Bruno Amato | Sheriff | Garbage Man #1 | 1 | 1 |
| Deena Dill | Kristy | Libby | 1 | 1 |
| Ellen Albertini Dow | Mrs. Riblet | Dottie Arkin | 1 | 1 |
| Jeremy Luke | Thomas Grasso | Mickey | 1 | 2 |
| Jim Jansen | Neonatologist | Doctor Carter | 1 | 1 |
| Kathryn Joosten | Lois | Robbie | 1 | 1 |
| Michael Spound | Dwayne's Father | Gary Kravitz | 1 | 1 |
| Nan Martin | Mrs. Curwane | Pat Suggs | 1 | 1 |
| Paulette Braxton | Kenya | Kyle Jackson / Kitty | 1 | 1 |
| Peter Gregory | Mr. Phillips | Stephen Mancuso | 1 | 1 |
| Rob Evors | Gary | Dirk Bender | 1 | 1 |
| Ron Fassler | Mr. Rosen | Arnold | 1 | 1 |
| Ron Perkins | Mr. Elmore | Calvin Doyle | 1 | 1 |
| Steve Tom | MacPherson | Bert Belinsky | 1 | 1 |
| Tom Kiesche | Officer Monroe | Drew Higgins | 1 | 1 |
| Mark Chaet | Tim | Mr. Trevathan, Obnoxious Whale | 1 | 2 |
| Philippe Bergeron | European | Vidal | 1 | 2 |
| Anil Raman | Cashier | Groovy Singh | 1 | 1 |
| Annie Fitzgerald | Devin Paxon | Carol Connell | 1 | 1 |
| Bradley Snedeker | Officer Jimmy Howe | Carl Ellsworth | 1 | 1 |
| Brian Leckner | Lloyd | Darryl | 1 | 1 |
| Cullen Douglas | Marvin | Schmee | 1 | 1 |
| David St. James | Kaplan | Chapel Owner | 1 | 1 |
| Geoffrey Wigdor | Anthony | Kevin | 1 | 1 |
| James McCauley | Dan Shore | Kleem | 1 | 1 |
| Jon Curry | Karl | Crawford | 1 | 1 |
| Kendra Danielle Smith | Trish | Grace | 1 | 1 |
| Kevin Brief | Walter Brosnich | Mr. Logan | 1 | 1 |
| Lenny Citrano | Martin | Lou Mosley | 1 | 1 |
| Richard Fancy | Mr. Thomas | Palmer | 1 | 1 |
| Yorgo Constantine | Trekkie | Jerry Garret | 1 | 1 |
| Rafael J. Noble | Smitty | Timmy | 2 | 1 |
| Russell Edge | CT Tech | CIA Agent | 3 | 1 |
| Art LaFleur | Miles Kearney | Club Owner | 1 | 1 |
| Carole Gutierrez | Landlady | Nurse | 1 | 1 |
| Cathy Lind Hayes | Elaine Gasner | Muriel Smith | 1 | 1 |
| Charles C. Stevenson Jr. | Capt. Eddie | Mr. Flannigan | 1 | 1 |
| Cheryl White | Meryl Sites | Susie Benkin | 1 | 1 |
| Cocoa Brown | Judy | Lady Behind The Counter | 1 | 1 |
| Donna Ponterotto | Pearl | Female Director | 1 | 1 |
| Elaine Kagan | Mrs. Shearer | Myra Schleich | 1 | 1 |
| Frank Novak | Ted | Detetive Valdivia | 1 | 1 |
| Hank Stratton | Curt Oberg | FBI Agent Portis | 1 | 1 |
| Ilia Volok | Kovalev | Rudy Vinovich | 1 | 1 |
| Lee Arenberg | Juke | Floorwaxer | 1 | 1 |
| Lorna Scott | Stan's Wife | Loretta Harris | 1 | 1 |
| Michael Kopelow | Jim | White Boy Rasta | 1 | 1 |
| Patricia Belcher | Ward Nurse | Velma Cannon | 1 | 1 |
| Paul Keith | Paul | Cliff Haner | 1 | 1 |
| Randall Park | Yong-Jo Pak | Jasper | 1 | 1 |
| M. Darnell Suttles | Lemoyne | Pit Boss | 2 | 1 |
| Petrea Burchard | Judge Amoroso | Judge | 2 | 1 |
| Al Pugliese | Angelo | Tony Rago | 1 | 1 |
| Barry Sigismondi | Hamer | SWAT Captain | 1 | 1 |
| Christie Lynn Smith | Marina Grasso | Preggo | 1 | 1 |
| D.C. Douglas | Ambrose | Barnett | 1 | 1 |
| David Magidoff | Jeffrey | Geek | 1 | 1 |
| David O'Donnell | Bill | Jason | 1 | 1 |
| Erich Anderson | Mr. Bradley | James Powell | 1 | 1 |
| Ewan Chung | Chiu | Ruben Kim | 1 | 1 |
| J.J. Boone | Lenore Simkins | "Mara" Lamaze Instructor | 1 | 1 |
| Jeremy Kent Jackson | Jock | Archie Druzinski | 1 | 1 |
| John Ciccolini | Gary Jones | Lewis Jennings | 1 | 1 |
| John Eric Bentley | Larry Anderson | Agent Sipes | 1 | 1 |
| Michael Hagiwara | Steve Sakabu | Asian High Roller | 1 | 1 |
| Phil Abrams | Rodney | Defense Attorney | 1 | 1 |
| Reginald Ballard | Police Officer | Coleman Riggs | 1 | 1 |
| Steven Lee Allen | Contractor | Liquor Store Clerk | 1 | 1 |
| Steven M. Gagnon | Dr. Blum | Roy | 1 | 1 |
| Sven Holmberg | Lars | Kevin Pool | 1 | 1 |
| Timothy McNeil | Rotolo | Insurance Investigator #1 | 1 | 1 |
| Yolanda Snowball | Neighbor | Lois | 1 | 1 |
| Matt Williamson | Fireman #1, Ted | Al Kornstein | 2 | 1 |
| Anne Betancourt | Mrs. Kearney | Maria DiGiuseppe | 1 | 1 |
| Chad Einbinder | Gordan | Les Marinoff | 1 | 1 |
| Chris Marrs | Auto Store Owner | Rodney | 1 | 1 |
| Edward Carnevale | Packie | Al Lopez | 1 | 1 |
| Helen Eigenberg | Renee Weber Stewart | Lawyer #3 | 1 | 1 |
| Nigel Gibbs | Matson | Special Agent Myer | 1 | 1 |
| P.J. Marino | Officer Jaeger | Shooter | 1 | 1 |
| Peggy Dunne | Silvia | Judy | 1 | 1 |
| Tom Choi | Zafares | Mr. Nakamura | 1 | 1 |
| Wells Rosales | Cory | Miguel Hurtado | 1 | 1 |
| Ricky Dean Logan | Ice Pick Guy | Ring Buyer, Vince Kamen | 1 | 2 |
| Adam Lieberman | Levine | Vic | 1 | 1 |
| Alejandro Patiño | Best Man | Augie | 1 | 1 |
| Cisco Reyes | Officer Tim Daniels | DJ | 1 | 1 |
| Craig Ricci Shaynak | Fritz | Pitbull Kilmartin | 1 | 1 |
| Fred Saldone | Stetson | Sgt. Hauptschein | 1 | 1 |
| Hal Havins | Jacobi | Juror #1 | 1 | 1 |
| Jacob Bruce | Rennie Stevens | Tom Grabowski | 1 | 1 |
| Lou Beatty, Jr. | Dexter Jenkins | Uncle Gerald | 1 | 1 |
| Nadine Ellis | Mason's Wife | Dealer | 1 | 1 |
| Olga Vilner | Luda | Olga | 1 | 1 |
| Reggie Jordan | Street Sweeper | Doctor #2 | 1 | 1 |
| Ruth Silveira | Chemo Tech Marni | Older Woman | 2 | 1 |
| Bette Rae | Mrs. Gottschuck | Jan | 1 | 1 |
| Chancellor Miller | Brett | Brent Kern | 1 | 1 |
| Gary Kraus | CJ | George | 1 | 1 |
| Jennifer Costa | Eva | Sales Woman | 1 | 1 |
| Marcus Toji | Binkey | Marcus | 1 | 1 |
| Maura Soden | Miranda | Dr. Joyce Marrs | 1 | 1 |
| Remy Thorne | Milo | Kevin | 1 | 1 |
| Shane Blades | Marcus Udesky | Tall Guy | 1 | 1 |
| Sue Nelson | Brenda Wesson | Joyce | 1 | 1 |
| Tom Carey | Roman | Starter | 1 | 1 |
| Tom Simmons | Ethan Brown | Agent Lewis | 1 | 1 |
| Trisha Simmons | Maureen | Sharkey's Assistant | 1 | 1 |
| Vincent Duvall | Father | Ray Anawalt | 1 | 1 |
| Bob Rumnock | Phillip Berk | Gordon Fisk | 1 | 1 |
| Chris Ufland | Mr. Perry | Wedding Ring Guy | 1 | 1 |
| John David Conti | Tony Pipitone | Player #3 | 1 | 1 |
| John Maynard | Flasher | Desert Dreams Manager | 1 | 1 |
| Maria McCann | Babette Fritzler | Susan Welch | 1 | 1 |
| Nick DeMauro | Zumbano | Clerk | 1 | 1 |
| Paul Raci | Mr. Spencer | Kenny Roman | 1 | 1 |
| Scott Rabinowitz | Ralph | Dave Rudman | 1 | 1 |
| Tony Longo | Angel Dust Junkie | Dino "Slim" | 1 | 1 |
| Charles Martiniz | Eddy | Foreman | 1 | 1 |
| Christopher Boyer | Paxton the Opossum | Howard, Roland Ledezma | 1 | 2 |
| Dyllan Christopher | Hank | Weston | 1 | 1 |
| Gina Morelli | Mirissa | Rose Aversano | 1 | 1 |
| Janelle Inez | Pregnant Woman | Cashier | 1 | 1 |
| John Lacy | Kevin Poole | Guard | 1 | 1 |
| Lorenzo Eduardo | Crazy Ernie | Little Kev | 1 | 1 |
| Monica Allgeier | Vanessa | Polly Craven | 1 | 1 |
| Rod Tate | Darrel | Rio | 1 | 1 |
| Stacy Barnhisel | Nancy | Sue Brenley | 1 | 1 |
| Susan Grace | Gloria | Bonnie | 1 | 1 |
| Terrence Evans | Barry Mahoney | Scrooge | 1 | 1 |
| Anne Marie Howard | Shoud | Mrs. Taylor | 1 | 1 |
| Bunnie Rivera | Maria | Marta | 1 | 1 |
| David Jean Thomas | Edgar Dixon | Peter The Dealer | 1 | 1 |
| Garvin Funches | Brandon Kirk | Ref #2 | 1 | 1 |
| Geno Monteiro | Fred | Steve | 1 | 1 |
| Jim Klock | Tech | Police #1 | 1 | 1 |
| Damara Reilly | Estelle | Housekeeper | 1 | 1 |
| Ken Ward | Glen | Driver | 1 | 1 |
| Ricardo J. Chacon | Eddie | Agent #1 | 1 | 1 |
| Smalls | Earl | Beefy Security Guard | 1 | 1 |
| Timothy Lee DePriest | Vince Newberry | Yogi | 1 | 1 |
| Aasha Davis | Maureen | Sorority Girl #1 | 1 | 1 |
| Danny Le Boyer | Violent Patient | Gang Guy | 1 | 1 |
| Emerson Brooks | Gonzalez | David | 1 | 1 |
| Jamie Lee Redmon | Melia | ND Girl Scout #2 | 1 | 1 |
| Teresa Huang | Vivian | Alan's Wife | 1 | 1 |
| Walter Wong | MRI Tech | Hawaiian Detective #3 | 1 | 1 |
| Gino Montesinos | Officer Nunez | Montecito Employee | 1 | 1 |
| Michael Edwin | Drunk Man | Man | 1 | 1 |
| Asante Jones | Workman #1 | Carl | 1 | 1 |
| Michael Albala | County Anesthesiologist | Chuck | 1 | 1 |
| Annette M. Lesure | Yolanda | Young Girl | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.