All 206 actors in both Grey's Anatomy and Numb3rs
206 actors have appeared in both Grey's Anatomy and Numb3rs, across 585 episodes. The most-credited is Kate Burton, Dr. Ellis Grey in Grey's Anatomy and Anthropologist in Numb3rs.
| Actor | In Grey's Anatomy | In Numb3rs | Eps | Eps |
|---|---|---|---|---|
| Kate Burton | Dr. Ellis Grey | Anthropologist | 29 | 1 |
| Jeff Perry | Thatcher Grey | Morton Standbury | 15 | 1 |
| Sarah Drew | Dr. April Kepner | Piper St. John | 13 | 1 |
| Lauren Stamile | Nurse Rose | Kelly Johnston | 12 | 1 |
| Navi Rawat | Heidi | Amita Ramanujan | 1 | 7 |
| James Remar | James Evans | Randall Priest | 6 | 1 |
| Dan Martin | Scott Hill | Detective Cates | 2 | 4 |
| Sophina Brown | Joyce | Nikki Betancourt, Bianca Styles | 1 | 4 |
| Joy Osmanski | Intern Lucy | File Clerk | 11 | 1 |
| Tymberlee Hill | Intern Claire | FBI Tech, Junior Agent | 16 | 3 |
| Lorraine Toussaint | Dr. Helen Fincher | Agent Terri Green, Medical Examiner | 1 | 2 |
| Matthew Morrison | Dr. Paul Stadler | Blaine Cleary | 4 | 1 |
| Michael O'Neill | Gary Clark | Boyd Keene | 4 | 1 |
| Anne Dudek | Elise Castor | Emmanueline Kirtland | 1 | 1 |
| Christian Clemenson | Ivan Fink | Henry Korfelt | 1 | 1 |
| Cleo King | Robin | Rebecca James | 3 | 1 |
| Don McManus | Samuel Linden | Jeff Kinkirk | 1 | 1 |
| Joshua Malina | Seth Hammer | Howard Meeks | 1 | 3 |
| Julie Dretzin | Carmen Hall | Karen Griffiths | 1 | 1 |
| Keith David | Lloyd Mackie | Jeremiah Miller | 1 | 1 |
| Marilu Henner | Mrs. Moser | Regina Landers | 1 | 1 |
| Mark Pellegrino | Chris | Tim Hamer | 1 | 1 |
| Nancy Travis | Allison Baker | Jane Karellen | 1 | 1 |
| Richard Lawson | Bill Pierce | Clay Porter, Sr. | 3 | 1 |
| Robin Weigert | Karen Lawrence | Elaine Tillman | 1 | 1 |
| Sarah Rafferty | Suzanne Britland | Margo | 3 | 1 |
| Anjul Nigam | Dr. Raj Sen | Dr. Renfro | 4 | 1 |
| Steven Culp | Dr. Parker | Detective Graham Larson | 4 | 1 |
| Jonathan Adams | Dewayne Griffith | Clifford Hansen | 2 | 1 |
| Lynn Chen | Dr. Michelle Lin | Bree Eng | 5 | 1 |
| Raphael Sbarge | Paul | Malcolm Galway | 2 | 1 |
| Sharif Atkins | Josh Greene | Clay Porter | 1 | 2 |
| Jennifer Westfeldt | Jen Harmon | Karen | 3 | 1 |
| Lisa Vidal | Dr. Alma Ortiz | Jessica Malloy | 3 | 1 |
| Mary Kay Place | Olive "Ollie" Warner | Hester Stirling | 3 | 1 |
| Tom Irwin | Officer Hancock | Dr. Stephen Atwood | 3 | 1 |
| Amy Hill | Joanne | Property Manager | 1 | 1 |
| Amy Sloan | Kelly | Kari Syles | 1 | 1 |
| Annie Campbell | Anna | Wendy | 1 | 1 |
| Becky Wahlstrom | Lisa | Wanda Schoemer | 2 | 1 |
| Bill Smitrovich | Dr. Walter Carr | David Croft | 2 | 1 |
| Charlie Hofheimer | Jason Castor | Ron Allen | 1 | 1 |
| Clea DuVall | Jennifer Robinson | Melanie Bailey | 2 | 1 |
| Eric Lange | Steven Tanner | Skipper | 1 | 1 |
| Eugene Byrd | Danny Ford | Vic Mortiz | 1 | 1 |
| François Chau | Mr. Chue | Kaj-Jan Chen | 1 | 1 |
| George Coe | Ed Bullard | Stephen Logan | 1 | 1 |
| George Newbern | Stan Mercer | Brendan McCrary | 1 | 1 |
| Gregg Henry | Dr. Gracie | Pete Fox | 1 | 1 |
| James Frain | Tom Crawley | McClare | 1 | 1 |
| Jeffrey D. Sams | Andre | Mark Sutter | 1 | 1 |
| Joseph Lyle Taylor | Weiss | Jonas Grover | 1 | 1 |
| Kevin Carroll | Greg James | Sensei | 1 | 1 |
| Missi Pyle | Dr. Nicole Baylow | Janet Galvin | 1 | 1 |
| Peter Katona | Marcus Kane | Marine Expert | 1 | 1 |
| Ping Wu | Seymour Glass | Steven Jintao | 1 | 1 |
| Ptosha Storey | Regina Evans | Lawyer | 1 | 1 |
| Richard T. Jones | Captain Dan | Blanchard | 1 | 1 |
| Roxanne Hart | Dana Seabury | Cris Carlyle | 1 | 1 |
| Rusty Schwimmer | Patricia Phillips | Deanne Drake | 1 | 1 |
| Samaire Armstrong | Claire Nolan | Skyler Wyatt | 1 | 1 |
| Stacy Edwards | Kathleen Wheeler | Gail Hoke | 1 | 1 |
| Tom Amandes | Charlie Waller | Lawrence Dryden | 1 | 1 |
| LisaGay Hamilton | Dr. Connie Ryan | Sari Kinshasa | 2 | 1 |
| Stephanie Kurtzuba | Opal | Publicist | 2 | 1 |
| Allan Louis | Ronald Lace | John Owens | 1 | 1 |
| Angela Paton | Martha Elkin | Mrs. Janas Meloy | 1 | 1 |
| Arye Gross | Adam Morris | Professor Stanley Novich | 1 | 1 |
| Assaf Cohen | Aamir Elshami | Agent Kareem Allawi | 1 | 1 |
| Camille Chen | Kerry Schultz | Zi-Zi | 1 | 1 |
| Carol Locatell | Mai | Elsie Korfelt | 1 | 1 |
| Catherine Dent | Cathy Rogerson | Naomi Vaughn | 1 | 1 |
| Claire Lautier | Shelly | Erica Logan | 1 | 1 |
| Dohn Norwood | Lou | Captain Hazlett | 1 | 1 |
| Erica Gimpel | Bethany Anderson | Principal Riva Bell | 1 | 1 |
| Ethan Embry | Dr. David Moore | Blake Gosnell | 1 | 1 |
| Gary Basaraba | Micah | Joe Thibodeaux | 1 | 1 |
| Jesse Head | Will | Gregory Dietrich | 1 | 1 |
| José Zúñiga | Anthony Meloy | Bernardo Infante | 1 | 1 |
| Lesley Fera | Ann | ATF Agent Annie Wilson | 1 | 1 |
| Melinda Page Hamilton | Dr. Jennifer Stanley | Jennifer Nash | 1 | 1 |
| Molly Hagan | Jackie | Fingerprint Technician | 1 | 1 |
| Randall Arney | Mr. Bryce | Richard Cory | 1 | 1 |
| Ravi Kapoor | Sunder Atluri | Phil Sanjrani | 1 | 1 |
| Steven Flynn | Scott Robinson | Doug Windham | 1 | 1 |
| W. Earl Brown | Herb Cramer | Abner Stone | 1 | 1 |
| Wendy Gazelle | Julie Phillips | Colleen McCrary | 1 | 1 |
| Jillian Armenante | Mindy Carlson | Claire Wells | 2 | 1 |
| A. Russell Andrews | Mr. Davis | Duke Piermint | 1 | 1 |
| Alan Blumenfeld | Shawn Sullivan | Store Owner | 1 | 1 |
| Alyson Reed | Anna From HR | Eva Salton | 1 | 1 |
| Brian George | Emile Flores | Sanjay Ramanujan | 1 | 1 |
| Brian Howe | Robert Fischer | Robert Posdner | 1 | 1 |
| Bryan Chesters | John Brinn | Hector | 1 | 1 |
| Bubba Lewis | Kendrick Nystrom | Zack Wilson | 1 | 1 |
| Chris Conner | Mr. Nyles | Dr. Dan Matthews | 1 | 1 |
| Dale Dickey | Emily "Gasoline" Bennett | Karen Miller | 1 | 1 |
| David Carey Foster | Jackson's Lawyer | Hotel Manager | 1 | 1 |
| David Rees Snell | Richy Rich | Herb Moore | 1 | 1 |
| Deborah Strang | Ellie Ratigan | Martha Biggs | 1 | 1 |
| Derek Phillips | Dale Winick | Ryan Ferraro | 2 | 1 |
| Heather Mazur | Erin Mason | Janet Eckworth | 1 | 1 |
| James DuMont | Sheldon Morris | Vendor | 2 | 1 |
| James Immekus | Andrew Langston | Finn Montgomery | 2 | 1 |
| Jason Antoon | Mr. Samuels | Kai Kragen | 1 | 1 |
| John Rubinstein | Keith Kalber | Gene Evans | 1 | 1 |
| Mark Harelik | Keith Polus | Taylor Brindell | 1 | 1 |
| Markus Flanagan | Ed Hamilton | ATF Supervisor Eric Turner | 1 | 1 |
| Matt Roth | Michael Beglighter | Mike Belweather | 1 | 1 |
| Megan Gallagher | Mrs. Oldroyd | Sarah Blakely | 1 | 1 |
| Mia Barron | Lauren Turner | Carla Reed | 1 | 1 |
| Michael Beach | Mr. Baker | Len Walsh | 1 | 1 |
| Michael Shamus Wiles | Dr. Miller | Carl Baker | 1 | 1 |
| Michole White | Hillary | Agent Ramos | 1 | 1 |
| Omar Leyva | Luis Rivera | Valet | 3 | 1 |
| P.J. Brown | Phil | Bakery Man | 1 | 1 |
| Richard Cox | Marvin | Edward Barret | 1 | 1 |
| Ronobir Lahiri | Mr. Hanson | Coroner | 1 | 2 |
| Rowena King | Celeste Newman | Elizabeth Hopkins | 1 | 1 |
| Stephen Lee | Mr. Gibson | Tony Wolf | 1 | 1 |
| Stephen Spinella | Malar Pascowitz | Hans Stollbach | 1 | 1 |
| T'Shawn Barett, Jr. | Jon | Valet | 2 | 1 |
| Teri Reeves | Rory | Police Tech | 1 | 1 |
| Tom Everett | Jackson's Examiner | Keith Whittaker | 1 | 1 |
| Jack Merrill | Lab Tech | Dr. Jacobsen | 2 | 1 |
| Susan Merson | Lorraine | Brenda Aronson | 2 | 1 |
| Antonio D. Charity | Michael Nelson | LAPD Rookie | 1 | 1 |
| Barry Shabaka Henley | Mr. Patterson | Coach Grady | 1 | 1 |
| Chastity Dotson | Leslie Wilson | Karen Rhimes | 1 | 1 |
| Craig Tsuyumine | TV Reporter | Reporter | 1 | 1 |
| D.B. Woodside | Marcus King | Jonathan Schmidt | 1 | 1 |
| D.W. Moffett | Allan | Bob Tombrello | 1 | 1 |
| Dave Florek | Herman Crum | Alex Evans | 1 | 1 |
| David Burke | Don | Jim Mazzolla | 1 | 1 |
| Elyse Mirto | Grace | Wife | 1 | 1 |
| Erica Piccininni | Barbara Collins | Woman | 1 | 1 |
| Erika Alexander | Johanna McKay | U.S. Marshal Tricia Yaegger | 1 | 1 |
| Gary Carlos Cervantes | Mr. Calva | Victor | 1 | 1 |
| Geoffrey Rivas | Stu Vargas | Det. Ray Reynolds | 1 | 1 |
| Gina Hecht | Mrs. Sutton | Margaret Skinner | 1 | 1 |
| Jill Remez | April's Examiner | Kelly | 1 | 1 |
| John Prosky | Mr. Singleton | Kyle Holtzman | 1 | 1 |
| Jon Curry | Fred Fisher | Detective | 1 | 1 |
| Kathleen Mary Carthy | Mrs. Miller | N.D. FBI Agent | 1 | 1 |
| Kristen Ariza | Angela | Nurse | 1 | 1 |
| Larry Clarke | Paul | James Malin | 1 | 1 |
| Loren Dean | David | Paul Stevens | 1 | 1 |
| Marty Lodge | Anesthesiologist, Dr. Milton | Dr. Henry Stanlet | 3 | 1 |
| Michael Arden | Neal Hannigan | Whitley | 1 | 1 |
| Robert John Brewer | Philip Walker | Richard Helgencer | 1 | 1 |
| Rubén Garfias | Bob | Brakeman | 1 | 1 |
| Scott Cohen | Dr. Tom Evans | James Grace | 1 | 1 |
| Shannon Cochran | Mrs. Singleton | Doctor Iverson | 1 | 1 |
| Sam Ayers | Detective | FTRA Attacking Guy, News Vendor | 1 | 2 |
| Art Chudabala | Jerry Adams | Danny Phan | 1 | 1 |
| Blake Bashoff | Elliott Meyer | Ethan Powell | 1 | 1 |
| Brent Briscoe | Henry Lamott | Guard | 1 | 1 |
| Caryn West | Maura Brooks | Jennifer Milton | 2 | 1 |
| Chris McGarry | Danny Wayne | Jack Shuler | 1 | 1 |
| Daniel Bess | Pete Willoughby | Julien Curtis | 1 | 1 |
| Frank Maharajh | Paramedic | Kapil | 1 | 1 |
| Hilary Ward | Dr. Thompson | Audra Regal | 1 | 1 |
| Judith Moreland | Mrs. Baer | Fremont | 1 | 1 |
| Laura Heisler | Carla | Cynthia Abbott | 1 | 1 |
| Pepper Sweeney | Lisa's Dad | Victor Smith | 1 | 1 |
| Philip Casnoff | Dr. Mel Barnett | Maurice Connors | 1 | 1 |
| Rick Gifford | Davis Calder | C.I.A. #1 | 1 | 1 |
| Robert Neary | Hal | Ed Clark | 1 | 1 |
| Stephanie Erb | Mrs. Gantry | Linda Samuelson | 1 | 1 |
| Tina Huang | Roxanne | Ni-Shu | 1 | 1 |
| Toni Torres | Annette Aranda | SWAT Guy's Wife | 1 | 1 |
| William Charlton | Jeff | Ryan McCall | 1 | 1 |
| Bernard White | Dr. Darwich | Frank Hagen | 1 | 1 |
| Brett Rickaby | Mr. Weston | Steve Savard | 1 | 1 |
| Charles Hittinger | Mitch | Kevin Oliver | 1 | 1 |
| David Clennon | Jack Shandley | Mel Oliver | 1 | 1 |
| Erica Muñoz | Ally Diaz | Mary Velasco | 1 | 1 |
| Josh Clark | Lenny Shulte | Sgt. Ronald Jackson | 1 | 1 |
| Paul Cassell | John Hanson | Daniel Piermint | 1 | 1 |
| Stephanie Childers | Nancy Walters | Nancy Olin | 1 | 1 |
| Amanda Payton | Dr. Daphne Lopez | Tipsy Chick | 1 | 1 |
| David Grant Wright | Mr. Burton | Detective | 1 | 1 |
| George Gerdes | Norman Sholman | Rail Cop Captain | 1 | 1 |
| Jack Shearer | Jordan Franklin | Peter Evans | 1 | 1 |
| James Shanklin | Lt. Moore | Physicist | 1 | 1 |
| Jim Gleason | Dr. Domner | Senator Martin Tallman | 1 | 1 |
| John Lacy | Zack | Police Detective | 1 | 1 |
| John Paul Pitoc | Billy Sheehan | 2BY4 | 1 | 1 |
| Julie Mann | Paula | Student | 1 | 1 |
| Ken Meseroll | Ron | Captain Joe MacNevish | 1 | 1 |
| Mark Berry | AA Member | Reporter #3 | 1 | 1 |
| Nick Jaine | Tim | Benjamin Rajar | 1 | 1 |
| Sendhil Ramamurthy | Intern #2 | DOE Specialist | 1 | 1 |
| Bridger Zadina | Michael Anderson | Jim Mazzolla, Jr. | 1 | 1 |
| Jeremy Glazer | Drew Hawkins | Clayton Caswell | 1 | 1 |
| Matt McTighe | Vincent Wagner | Armed Guard #1 | 1 | 1 |
| Emma Prescott | Lucy | Emily Burdick | 2 | 1 |
| Jennifer Jean Snyder | Reporter | Michelle Collins | 1 | 1 |
| John Balma | Contest Judge | Thad Esmond | 1 | 1 |
| Logan Donovan | Brad Parker | Anonymous Masked Raider | 1 | 1 |
| Nick Roth | Tim Bowman | Techie | 1 | 1 |
| Dougald Park | Lawyer | Special Agent O'Greer | 1 | 1 |
| Mark Edward Smith | Gary | Lawyer | 1 | 1 |
| Andrew Carrillo | Bill | Hispanic Man | 1 | 1 |
| Terry Woodberry | Police Officer | Paramedic | 1 | 1 |
| Traber Burns | Andy's Lawyer | Kenneth Eckworth | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.