All 124 actors in both Elementary and Royal Pains
124 actors have appeared in both Elementary and Royal Pains, across 258 episodes. The most-credited is Jordan Gelber, Dr. Eugene Hawes, M.E. in Elementary and Howard Katz in Royal Pains.
| Actor | In Elementary | In Royal Pains | Eps | Eps |
|---|---|---|---|---|
| Jordan Gelber | Dr. Eugene Hawes, M.E. | Howard Katz | 22 | 1 |
| Stephen Spinella | Merrick Hausmann | Russell Berger | 1 | 12 |
| Bob Gunton | Frederick Wentz | General William Collins | 1 | 11 |
| Anastasia Griffith | Agatha Spurrell | Dr. Emily Peck | 1 | 9 |
| Laura Benanti | Anne Barker/Abigail Spencer | Shelby Shackelford | 1 | 8 |
| Ato Essandoh | Alfredo Llamosa | Antoine | 6 | 1 |
| Liza J. Bennett | Officer Hanna Gregson | Calliope | 5 | 1 |
| Jill Flint | Elle Bastin | Jill Casey | 1 | 4 |
| Michael Mulheren | Detective | Jim Harper | 1 | 6 |
| Tony Plana | General Howard Alvero | Marcos | 2 | 1 |
| Jeremy Davidson | Gordon Cushing | Ray Mazzarino | 1 | 6 |
| Afton Williamson | Monica Scott | Heather Small | 1 | 1 |
| Callie Thorne | Terry D'Amico | Allison Moore | 1 | 1 |
| David Costabile | Danilo Gura | Dick | 1 | 1 |
| Michael O'Keefe | Hudson Wayne Greer | Dave | 1 | 1 |
| Robert Christopher Riley | Roy Booker | Paramedic #1 | 3 | 1 |
| Patrick Breen | Vance Ford | Therapist Bob | 1 | 6 |
| Ken Marks | Moderator, Chairman, Meeting Leader | Dr. Madden | 4 | 1 |
| Brian George | Santhosh Mittal | Pundit Ji | 2 | 1 |
| Dan Lauria | Louis Garmendia | Mr. Sacani | 1 | 2 |
| Antonio Edwards Suarez | Sedan Driver | Stan the Orderly | 1 | 3 |
| David Harbour | Dr. Mason Baldwin | Dan Samuels | 1 | 1 |
| Jake Weber | Geoffrey Silver | Gabriel Gleason | 1 | 1 |
| Jennifer Ferrin | Rebecca Ellison | Kate | 1 | 1 |
| Kate Jennings Grant | Lydia Guerrero | Dr. Sylvander | 1 | 1 |
| Katie Finneran | Barbara Conway | Julie Kingsley | 1 | 1 |
| Lee Tergesen | Cray Fielder | Zack Kingsley | 1 | 1 |
| Maria Dizzia | Penny | Cindy Green | 1 | 2 |
| Marnie Schulenburg | Maureen | Sherrie Tanner | 1 | 3 |
| Michael Potts | Dr. Peter Hanson | Mr. Burman | 1 | 1 |
| Ronald Guttman | Elliot | Auction House Official | 1 | 1 |
| Shiri Appleby | Dalit Zirin | Stella | 1 | 1 |
| Susan Misner | Loretta Nichols | Claire Grant | 1 | 1 |
| Sutton Foster | Tara Parker | Julie Sharp | 1 | 1 |
| Annika Boras | Amy Damper | K.J. Golan | 1 | 2 |
| Bill Dawes | Declan Boyle | Jim | 1 | 1 |
| Bruce Altman | Dr. Jonathan Fleming | Jamie Zummerman | 1 | 1 |
| Daryl Edwards | Detective Perkins | Dr. Dern | 1 | 1 |
| David Alan Basche | Warren Clift | Rob Miller | 1 | 1 |
| David Furr | Paul Reeves | Bill Cartwright | 1 | 1 |
| Kate Levy | Lawyer, Aura's Lawyer | Dr. Froash | 3 | 1 |
| Kevin Kilner | Michael Haas | Tom Seelig | 1 | 1 |
| Roger Rathburn | Defense Attorney | Man | 1 | 1 |
| Trieste Kelly Dunn | Sophie Bush | Rachel Kepler | 1 | 1 |
| Emily Bergl | Marion West | Nola Cadeau | 1 | 2 |
| Lawrence Ballard | Guard | Doctor Foley | 1 | 2 |
| Miriam Shor | Jennifer Bader | Fannie Todd | 1 | 2 |
| Christopher Burns | Detective | Florian Hostetler | 2 | 2 |
| Adam Mucci | Rennie Jacobs | Gus | 1 | 2 |
| Armando Riesco | Jacob Esparza | Oscar | 1 | 2 |
| Geneva Carr | Rebecca Burrell | Mary Kay Higgins | 1 | 1 |
| Josh Cooke | Phil Balsam | Ben | 1 | 1 |
| Lucas Salvagno | Addict | Marco | 1 | 2 |
| Marjan Neshat | Detective Farrad | Mina | 1 | 1 |
| Mather Zickel | Hank Prince | Captain Brian | 1 | 1 |
| Matt Servitto | Captain Will Lombardi | Sidney Capelin | 1 | 1 |
| Paul Fitzgerald | Burt Jeffries | Natalie's Father | 1 | 1 |
| Rachel Hilson | Lexi | Niece 1 | 1 | 1 |
| Tina Chilip | Sinjae Vee | Riza | 1 | 1 |
| Kelly Deadmon | Lara Ukhov | Leslie | 1 | 2 |
| Auden Thornton | Julie Monahan | Bree | 1 | 1 |
| Jessica Phillips | Professor | Judith | 1 | 1 |
| Kathleen McNenny | Ida Talt | Dr. Heidi Jaffa | 1 | 1 |
| Margaret Colin | Natalie Gale | Lucy Everett | 1 | 1 |
| Michael Gaston | Kurt Yoder | Ed Harper | 1 | 1 |
| Patch Darragh | Griffin Parker | Felix | 1 | 1 |
| Tijuana Ricks | Teri | Carrie | 1 | 1 |
| Victor Cruz | Manager | Fisherman | 1 | 1 |
| Zachary Booth | Silas Cole | Oliver Ambrose | 1 | 1 |
| AJ Cedeño | Bartender | Lewis | 1 | 2 |
| Edward Baker-Duly | D.I. Davies | Arnold | 1 | 1 |
| Erik Heger | Cory Evans | Wade | 1 | 1 |
| Jeffrey C. Hawkins | Detective | Manager | 1 | 1 |
| JoAnna Rhinehart | Ms. Bracken | Diana Chase | 1 | 1 |
| Maddie Jo Landers | Corinna Wood | Nikki | 1 | 2 |
| Marcella Lowery | Diner Patron #1 | Dee | 1 | 1 |
| Matt McGorry | Officer Sam Klecko | EMT | 1 | 1 |
| Michael Chernus | Edwin Bond | Pat | 1 | 1 |
| Paul Urcioli | Jonah Chait | Swimmer | 1 | 1 |
| Rona Figueroa | Natalie Park | Surgical Tech | 1 | 1 |
| Alok Tewari | Rohan Giri | Dr. Alam Saba | 1 | 1 |
| Berto Colón | Will | EMT #2 | 1 | 1 |
| Brent Langdon | Peyton Trask | Malcolm Banks | 1 | 1 |
| Frank Deal | Detective Mike Muldoon | Bartender | 1 | 1 |
| Halley Feiffer | Ellen Rabin | Nell Bochinski | 1 | 1 |
| Henry Zebrowski | Cosmo | Chris | 1 | 1 |
| Jed Orlemann | Riley | David | 1 | 1 |
| Jennifer Lim | Natasha Kademan | Alice Lim | 1 | 1 |
| Jennifer Van Dyck | Alyssa Talbott | Edwina | 1 | 1 |
| Marcy Harriell | Yolanda Massee | Betty | 1 | 1 |
| Martin LaPlatney | Darryl Ghent | Husband | 1 | 1 |
| Patrick Boll | Glenn | Seersucker Man | 1 | 1 |
| Peter Jay Fernandez | Samuel Cardenas | Dr. Gruber | 1 | 1 |
| Ward Horton | Soap Opera Actor | Brandon | 1 | 1 |
| Almeria Campbell | Officer Rossi | Kristen | 1 | 1 |
| Cindy Katz | Marsha Whitaker | She | 1 | 1 |
| Danny Johnson | Clarence Jarman | Fire Chief | 1 | 1 |
| Gabe Doran | Propane Salesman | EMT #1 | 1 | 1 |
| Jimmie Saito | Blaine Geary | Scott | 1 | 1 |
| Max Von Essen | Clyde Staller / Jeff Danks | Hair | 1 | 1 |
| Megan Byrne | Doctor | Hotel Clerk | 1 | 1 |
| Michael Gibson | Detective Palmer | Agent | 1 | 1 |
| P.J. Sosko | Simon de Merville | Hogan | 1 | 1 |
| Peter Benson | Blake Tanner | Dr. Dan Ellis | 1 | 1 |
| Asa Somers | Doctor | Frank | 1 | 1 |
| David Hess | Darragh O'Connor | Mr. Ambrose | 1 | 1 |
| DeShawn Harold Mitchell | Guard | Orderly | 1 | 1 |
| Ed Moran | Detective | Captain Salmo | 1 | 1 |
| Edelen McWilliams | Alan's Lawyer | Box Office Worker | 1 | 1 |
| Johanna Day | Maureen Tyler | Elizabeth Dupont | 1 | 1 |
| Michael Bakkensen | Reporter #1 | Woody Keegan | 1 | 1 |
| Robert Emmet Lunney | Attorney | Chairman | 1 | 1 |
| Tom Galantich | Brian Watt | Doctor Post | 1 | 1 |
| Craig Wroe | Dana's Lawyer | Maitre D' | 1 | 1 |
| Don Guillory | News Cameraman | Dr. Wolf | 1 | 1 |
| Vedant Gokhale | Pradeep Singh | Videographer | 1 | 1 |
| Curt Bouril | FRP #1 | Kim's Husband | 1 | 1 |
| Elizabeth Masucci | Sexy Woman #2 | Edie | 1 | 1 |
| Gregory Abbey | Daren | He | 1 | 1 |
| John Bolger | David Batonvert | Mr. Stark | 1 | 1 |
| Julienne Hanzelka Kim | Shauna Milius | Dr. Carol Lee | 1 | 1 |
| Marcus Ho | Lenny Fong | Greg | 1 | 1 |
| Nick Sullivan | Frank Dempster | Choir Member #2 | 1 | 1 |
| Tom Titone | Lobbyist | Surgeon | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.