All 206 actors in both Grey's Anatomy and Monk
206 actors have appeared in both Grey's Anatomy and Monk, across 591 episodes. The most-credited is Nicole Rubio, Paramedic Nicole Cummins in Grey's Anatomy and Angry Mother, Second Nurse in Monk.
| Actor | In Grey's Anatomy | In Monk | Eps | Eps |
|---|---|---|---|---|
| Nicole Rubio | Paramedic Nicole Cummins | Angry Mother, Second Nurse | 35 | 2 |
| Linda Klein | Scrub Nurse Linda | Nurse | 25 | 1 |
| Jeffrey Dean Morgan | Denny Duquette | Steven Leight | 20 | 1 |
| Hector Elizondo | Carlos Torres | Dr. Neven Bell | 5 | 14 |
| Kate Anthony | Nurse Kate | Cindy Gilbertsen | 14 | 1 |
| Kali Rocha | Dr. Sydney Heron | Maria Schecter | 11 | 1 |
| Rebecca Field | Sabine McNeil | Gail | 7 | 1 |
| Glenne Headly | Elizabeth Archer | Karen Stottlemeyer | 1 | 4 |
| Michael Patrick McGill | Bob Corson | First Patrolman, Sgt. Steiner, Uniform Cop #2 | 1 | 3 |
| Sharon Lawrence | Robbie Stevens | Linda Fusco | 1 | 3 |
| Kathleen M. Darcy | Anesthesiologist | Mrs. Esterbrook | 10 | 1 |
| John O'Brien | Lab Tech Jeffrey | Maitre'd | 13 | 1 |
| Marguerite Moreau | Dr. Emma Marling | Amanda Castle | 6 | 1 |
| Eve Gordon | Mary Chapman | Aunt Madge, Janie | 1 | 2 |
| Josh Stamberg | Tommy Walker | Agent Grooms | 1 | 2 |
| Melissa George | Sadie Harris | Jenna Ryan | 8 | 1 |
| Brian Kerwin | Holden McKee | Ben Glaser | 1 | 1 |
| Kerry O'Malley | Jane Collins | Susan Donovan | 1 | 1 |
| Laurie Metcalf | Beatrice Carver | Cora Little | 1 | 1 |
| Wallace Langham | Dr. Steve Corridan | Steve DeWitt | 1 | 1 |
| Jane Galloway Heitz | Annie's Mother | Essie, Wife | 1 | 2 |
| Jayden Lund | Hulking Patient | Morris | 1 | 2 |
| Kathy Baker | Anna Loomis | Sylvia Fairbourn | 2 | 1 |
| McNally Sagal | Kari Donnelly | Miss Moody | 5 | 1 |
| Greg Pitts | Jerry O'Malley | Billy Logan | 5 | 1 |
| Amy Aquino | Marianne Grandy | Mrs. Bowen, Rhonda | 1 | 2 |
| Bernie Kopell | Father Christopher | Gilson | 1 | 1 |
| Brian Tee | Andrew 'Andy' Billings | Jimmy Lu | 2 | 1 |
| Chet Grissom | Uncle Pat | Detective #1, Detective Burns, Detective Terry Chasen | 1 | 3 |
| Cleo King | Robin | 911 Operator | 3 | 1 |
| Cynthia Stevenson | Ruthie Carlin | Dianne Brooks | 1 | 1 |
| Drew Powell | Carl Shatler | Eddie Murdoch | 1 | 1 |
| Joelle Carter | Mary | Barbara O'Keefe | 1 | 1 |
| Joseph Sikora | Shane Herman | Boz Harrelson | 1 | 1 |
| Kurt Fuller | Jerry | Deputy Mayor Dennis Gammil | 1 | 1 |
| Lauren Tom | Audrey Pascowitz | Mrs. Ling | 1 | 1 |
| Lonnie Colon | Surgeon #4 | Ronnie | 1 | 2 |
| Matt Lanter | Adam Singer | Clay Bridges | 1 | 1 |
| Michael Weston | Quinn Durston | Morris | 2 | 1 |
| Rose Abdoo | Dr. Dawson | Mrs. Monk | 1 | 1 |
| Kathleen Mary Carthy | Mrs. Miller | CSI Technician Macy, Field Tech, Medical Examiner | 1 | 3 |
| Gregg Daniel | Paul James | Chuckling Detective, Truck Driver | 1 | 2 |
| Kathryn Joosten | Mrs. Drake | Neysa Gordon, Nurse Stempel | 1 | 2 |
| Marc Vann | Hematologist | Hal Duncan, Miles Franklin | 1 | 2 |
| Steve Monroe | Orderly | Chet Walsh, Sgt. Myers | 1 | 2 |
| Adam Kulbersh | Tommy | Dr. Edward Garcia | 1 | 1 |
| Amanda MacDonald | Claire Rice | Alien Girl Enthusiast | 1 | 1 |
| Caroline Aaron | Connie | Aunt Shelia | 1 | 1 |
| Clare Carey | Nikki Gibson | Sister Heather | 1 | 1 |
| Courtney Ford | Jill Meyer | Emily Carter | 1 | 1 |
| Currie Graham | Greg | Harold Maloney | 1 | 1 |
| Dwayne L. Barnes | Conner Squire | Officer Cooper | 1 | 1 |
| Erin Cahill | Meg Shelley | Callie Esterhaus | 1 | 1 |
| Geoffrey Blake | Jim | Ike | 1 | 1 |
| Glenn Morshower | Walter | Martin Willowby | 1 | 1 |
| Hayley Chase | Cassidy Gardner | Emily C. | 1 | 1 |
| Jenny Cooper | Bethany | Jennifer | 1 | 1 |
| Jessica Steen | Dr. Rebecca Froy | Myra Teal | 1 | 1 |
| Joe Holt | Steve Beck | Midland Detective | 1 | 1 |
| John Hemphill | Brad Nystrom | Eric Gilbertsen | 1 | 1 |
| La Monde Byrd | Martin Sterling | Wedoes | 1 | 1 |
| Lance Barber | Phil | Refrigerator Deliveryman | 1 | 1 |
| Lex Medlin | Byron Gibbis | Richard Meckler | 1 | 1 |
| Liza Lapira | Noel Lavatte | Dr. Souter | 1 | 1 |
| Molly Hagan | Jackie | Ms. Lennington | 1 | 1 |
| Nate Mooney | Randy | Scat | 1 | 1 |
| Patrick Fischler | Jake Steiner | Eddie | 1 | 1 |
| Ron Roggé | Fire Captain | Welder | 1 | 1 |
| Rosalind Chao | Kathleen Patterson | Arleen Cassidy | 1 | 1 |
| Stewart Skelton | Dr. Fischer | Alumni #1 | 1 | 1 |
| Taylor Nichols | Rick Humphrey | Steve Connelly | 1 | 1 |
| Tom Bower | Mr. Schultz | Bennie Wentworth | 1 | 1 |
| Burl Moseley | Jason Cooper | Grocery Store Clerk, Police Officer | 1 | 2 |
| Emily Happe | Libby Kepner | Cocktail Waitress | 2 | 1 |
| John Cothran, Jr. | Ken Monroe | Warden Christie | 2 | 1 |
| Audrey Wasilewski | Nicole Waldman | Caucasian Nurse, Gloria Kasinsky | 1 | 2 |
| Bre Blair | Lauren Pailey | Debbie Barnett | 1 | 1 |
| Brennan Elliott | Dave Kristler | Paul Harley | 1 | 1 |
| D.B. Woodside | Marcus King | Dr. Matthew Shuler | 1 | 2 |
| Dale Waddington Horowitz | OB Resident | Mrs. Hammond | 2 | 1 |
| Dennis Boutsikaris | Don Taylor | Dr. Morris Lancaster | 1 | 1 |
| Faith Prince | Sonya Cowlman | Kathy Willowby | 1 | 1 |
| Faran Tahir | Isaac | Museum Official | 1 | 1 |
| Graham Beckel | Jim Johnson | Bill Gibbard | 1 | 1 |
| J.P. Manoux | Danny Nelstadt | Jacob Posner | 1 | 1 |
| John Lacy | Zack | Chauncey Cunningham | 1 | 1 |
| Kathe Mazur | Mrs. Epstein | Diana Phelps | 1 | 1 |
| Ken Barnett | Freddie | Deputy Hatcher | 1 | 1 |
| Ken Marino | Brad Ackles | Lester Highsmith | 1 | 1 |
| Mark Bloom | Prosecutor | CSI Tech | 1 | 1 |
| Mark Harelik | Keith Polus | Mikel Alvanov | 1 | 1 |
| Matt Winston | Frank Jeffries | Brian Babbage | 1 | 1 |
| Patrick O'Connor | Judge Finch | Daniel MacGraw | 1 | 1 |
| Paul Hayes | Old Man Carl | Mr. Cooper | 1 | 1 |
| Samantha Quan | Shelly Boden | Female Control Officer | 1 | 1 |
| Wilson Cruz | Kyle | Smoking Technician | 1 | 1 |
| Jim Lau | Examiner #4 | Landlord | 2 | 1 |
| Kevin Berntson | Shayne Riley | Sports Fan Juror, Young Clerk | 1 | 2 |
| Alain Uy | Captain Pat Aquino | John Kuramoto | 1 | 1 |
| Andrew Borba | Chris Ward | Parole Commissioner | 1 | 1 |
| Andrew James Allen | Coby McKee | Tim Sussman | 1 | 1 |
| Chris McGarry | Danny Wayne | Detective Doyle | 1 | 1 |
| Christopher Boyer | Tom Cline | Sharona's Lawyer | 1 | 1 |
| David DeLuise | Charlie Connor | Larry Cutler | 1 | 1 |
| Denise Dowse | Lorraine | Samantha Austin | 1 | 1 |
| Gary Kraus | Louis Cardon | Entry Guard | 1 | 1 |
| Hugh Holub | Dr. Ben Warren | Shift Supervisor | 1 | 1 |
| James Gammon | Mr. Scofield | Oates | 1 | 1 |
| Jeremiah Birkett | John McMurdo | Reggie | 1 | 1 |
| Jeremy Howard | Keith Hitchens | Alien-Dressed Enthusiast | 1 | 1 |
| Jeris Lee Poindexter | Mr. Strickland | Eddie | 1 | 1 |
| Sean McDermott | Jake Epstein | Kevin | 1 | 1 |
| Stephanie Erb | Mrs. Gantry | Gail Segalis | 1 | 1 |
| Stephen Sowan | Danny Metcalf | Suspicious Kid | 1 | 1 |
| Susan Chuang | Naomi Evans | Kathleen | 1 | 1 |
| Susan Ruttan | Mrs. Swore | Mrs. Ledsky | 1 | 1 |
| Terri Hoyos | Flor's Abuela | Maria Cordova | 1 | 1 |
| Todd Stashwick | Mr. Kramer | Gene Edelson | 1 | 1 |
| Todd Waring | Tobin | Maintenance Worker | 1 | 1 |
| Billy Mayo | Rick | Mechanic | 2 | 1 |
| Karl T. Wright | Divorce Mediator | Monk's Lawyer, Principal Thicket | 1 | 2 |
| Susan Merson | Lorraine | Mrs. Sheckman | 2 | 1 |
| Assaf Cohen | Aamir Elshami | Ricardo | 1 | 1 |
| Benjamin Burdick | Tow Truck Driver | Gary the Caddie | 1 | 1 |
| Betty Murphy | Lulu | 2nd Elderly Woman | 1 | 1 |
| Brooke Baumer | Obstetrician | Applicant #1 | 1 | 1 |
| Caryn West | Maura Brooks | Speed date #1 | 2 | 1 |
| Cyd Strittmatter | Dr. Alicia Krause | Clarissa | 1 | 1 |
| Gordon Clapp | Victor Kaufman | Francis Merrigan | 1 | 1 |
| Jim Parrack | Ted Carr | Roger Zisk | 1 | 1 |
| Larry Clarke | Paul | Rudy | 1 | 1 |
| Mark Edward Smith | Gary | Forensic Tech | 1 | 1 |
| Marty Ryan | Zach Mischer | Depository Supervisor | 1 | 1 |
| Michael Mantell | Tim Nolan | Brother Andrew | 1 | 1 |
| Michelle Krusiec | Anna Chue | Maria | 1 | 1 |
| Rahnuma Panthaky | Dr. Kasliwal | Cashier | 1 | 1 |
| Robert Alan Beuth | Mr. Gordor | D.A. Charles Friedken | 1 | 1 |
| Sara Van Horn | Nash's Grandma | Night Nurse | 1 | 1 |
| Suzanne Ford | Hazel Parker | Gwen DeWitt | 1 | 1 |
| Tim De Zarn | Santa Claus | Max Barton | 1 | 1 |
| Tom Everett | Jackson's Examiner | Kenneth Woods | 1 | 1 |
| Angela E. Gibbs | Mrs. Rollins | Barton's Lawyer | 1 | 1 |
| Barbara Brownell | Hattie Straughn | Aunt Nora | 1 | 1 |
| Barry Livingston | Wayne Sheehan | Geiger Counter Enthusiast | 1 | 1 |
| Cantrell Harris | Rescue Worker | Father | 1 | 1 |
| Chase Kim | Lawyer | Thai Drug Lord | 1 | 1 |
| Christie Lynn Smith | Cynthia Daniels | Valerie | 1 | 1 |
| Frankie Ingrassia | Tyler's Mom | Dr. Kroger's Receptionist | 1 | 1 |
| Josh Cruze | Hank | Roberto the Cook | 1 | 1 |
| Judi Barton | Board Member | Guest Sylvia | 1 | 1 |
| Larry Brandenburg | Arnie Grandy | Val Birch | 1 | 1 |
| Liz Montgomery | Woman In ER | Sick Woman | 1 | 1 |
| Michael Shamus Wiles | Dr. Miller | Jimmy Cusack | 1 | 1 |
| Pepper Sweeney | Lisa's Dad | Navy Cook | 1 | 1 |
| Rusty Burns | Reporter #2 | 2nd Angry Mother | 1 | 1 |
| Vic Chao | Doug Giles | Lee | 1 | 1 |
| Boo Arnold | Mr. James | Cousin Curtis | 1 | 1 |
| Cinda Adams | Wendy Hayes | Mrs. Paddock | 1 | 1 |
| Deborah Geffner | Mrs. Burton | Nun | 1 | 1 |
| Dona Hardy | Grace Bickham | First Elderly Woman | 1 | 1 |
| Jerry Kernion | Bobby Corso | Security Guard | 1 | 1 |
| Kathryn Taylor Smith | Nurse Caroline | Waitress | 1 | 1 |
| Lisa Long | Marlene D. | Speed date #4 | 1 | 1 |
| Liza de Weerd | Woman | Aunt Teresa | 1 | 1 |
| Rich Hutchman | Fake Patient | Cardiologist | 1 | 1 |
| Rob Brownstein | Larry | Cory | 1 | 1 |
| Tom Ohmer | Ronald Meinero | Sergeant, Sergeant Lyman | 1 | 2 |
| Bob Gebert | Mario | Hardware Store Clerk | 1 | 1 |
| Bryce Robinson | Timothy Ward | Excited Orphan | 1 | 1 |
| David Chan | Mr. Madera | Older Man | 1 | 1 |
| David Noroña | Dorian's Father | Lt. Plato | 1 | 1 |
| Ernie Grunwald | Gary Rubin | Vampire Manager | 1 | 1 |
| Ivar Brogger | Graham Cunningham | Deputy Commissioner | 1 | 1 |
| Milda Dacys | Marla Shulte | Juliette | 1 | 1 |
| Ross Mackenzie | Dr. Mitchell | Male Control Officer | 1 | 1 |
| Jeff Holman | Mr. Felker | Mover | 1 | 1 |
| Joe Camareno | Lucas Marshall | Mexican Officer | 1 | 1 |
| Michael Weaver | Greg | Agent Lapides | 1 | 1 |
| Nick Hoffa | Firefighter #2 | Bartender | 1 | 1 |
| Pamela Shaddock | Shara Freeman | Waitress | 1 | 1 |
| Rocky McMurray | Hunter | Captain Stockton | 1 | 1 |
| Scott Michael Morgan | Patient #2 | Security Guard | 1 | 1 |
| Sean Donnellan | Mr. Crossley | Burly Mechanic | 1 | 1 |
| Sue Cremin | Holly | Reporter | 1 | 1 |
| Darlene Kegan | Ruby Walker | Reporter #1 | 1 | 1 |
| David J. Lee | Man In Clinic | Intern Collins | 1 | 1 |
| Dougald Park | Lawyer | Police Spokesman | 1 | 1 |
| Jason Boegh | Excited Doctor 1 | Administrative Assistant | 1 | 1 |
| René Rivera | James's Father | Captain Valez | 1 | 1 |
| Sally Ann Brooks | Marie Lamott | Mrs. Bloom | 1 | 1 |
| Skyler James | Pete Hover | Tearful Little Boy | 1 | 1 |
| Stephon Fuller | Gregor | Gas Man | 1 | 1 |
| Aaron Lustig | Judge William Benson | Prosecutor Fox | 1 | 1 |
| Kevin Dunigan | SWAT Guy | Guard | 1 | 1 |
| Louie Alegria | Surgeon #3 | Uniform Cop | 1 | 1 |
| Stacey Hinnen | Mr. Johnson | Buck | 1 | 1 |
| Tammy Dahlstrom | Orderly | Dolly | 1 | 1 |
| Traber Burns | Andy's Lawyer | Minister | 1 | 1 |
| Brandon Ford Green | Dr. Allen | Detective Jones | 1 | 1 |
| Carlease Burke | Mrs. Gates | Teacher Juror | 1 | 1 |
| Sharmila Devar | Female Intern | Cashier | 1 | 1 |
| Rob Mainord | Procurement Surgeon | Bookstore Owner | 1 | 1 |
| Clint Culp | Mr. Quaid | Barfly | 1 | 1 |
| Wendy Schenker | Nervous Tenant | Speed date #3 | 1 | 1 |
| Heather Brooker | Daycare Worker #2 | 1st Gushing Fan | 1 | 1 |
| Molly Baker | Sharon Caldwell | Intern Eva | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.