All 157 actors in both Castle and Private Practice
157 actors have appeared in both Castle and Private Practice, across 284 episodes. The most-credited is Ann Cusack, Rita in Castle and Susan Grant in Private Practice.
| Actor | In Castle | In Private Practice | Eps | Eps |
|---|---|---|---|---|
| Ann Cusack | Rita | Susan Grant | 2 | 5 |
| Caterina Scorsone | Joanne Delgado | Dr. Amelia Shepherd | 1 | 5 |
| James Morrison | Commissioner Malone | William White | 1 | 8 |
| Darby Stanchfield | Meredith | Tess Milford | 2 | 1 |
| Jayne Brook | Claudia Peterson | Dr. Meg Porter | 1 | 5 |
| Joshua Bitton | Grant "Sully" Sullivan | Adam Stanfield | 2 | 1 |
| Sarah Drew | Chloe Richardson | Judy | 1 | 2 |
| Charlie Hofheimer | Eric Chambers | Ron Nelson | 1 | 4 |
| Abigail Spencer | Sarah Reed / Lauren Branston | Rachel | 1 | 1 |
| Brett Cullen | Christian Dahl | Allan | 1 | 1 |
| Brianna Brown | Eva Whitfield | Sam's Date | 1 | 1 |
| Corey Reynolds | Mr. West | Ray Paget | 1 | 1 |
| Currie Graham | Stanford Raynes | Ryan Mason | 1 | 1 |
| David Burke | Chief John Brady | Gary Spencer | 1 | 1 |
| David Grant Wright | Ben Moss | Troy | 1 | 3 |
| Ever Carradine | Mirielle Lefcourt | Kara | 1 | 1 |
| Frances Fisher | Matilda King | Ruby Broome | 1 | 1 |
| French Stewart | Zach Robinson | Kevin Mason | 1 | 1 |
| Josh Randall | Miles Haxton | Carl | 1 | 1 |
| Kathleen Rose Perkins | Elise Finnegan | Jodi | 1 | 1 |
| Molly Hagan | Daisy May | Karen Adams | 1 | 1 |
| Patrick Fabian | Peter Monroe | Robert Weston | 1 | 1 |
| Romy Rosemont | Nurse Lockhart | Jackie | 1 | 1 |
| Rosalind Chao | Mimi Tan | Lillie Jordan | 1 | 1 |
| Chryssie Whitehead | Kathy Moore | Dana Nelson | 1 | 4 |
| D.B. Woodside | Lance Carlberg | Duncan | 1 | 2 |
| Jocko Sims | Matt Hendricks | Adam | 2 | 1 |
| Kyle Secor | Deputy Director Anthony Freedman | Adam Wilder | 1 | 2 |
| Leonard Roberts | Special Agent Jason Avery | Ryan | 2 | 1 |
| Michael Bofshever | Dr. Goldberg | Neal Chaplin | 1 | 2 |
| Derek Phillips | Reggie Walsh | Eddie Lindy | 1 | 3 |
| Judith Hoag | Cynthia Hamilton | Angie McConnell | 1 | 3 |
| Michael Reilly Burke | Frank Nesbit | Simon McConnell | 1 | 3 |
| Anne Dudek | Emma Carnes | Lori | 1 | 1 |
| Audrey Marie Anderson | Aubrey Haskins | Rose Filmore | 1 | 1 |
| Chris Butler | Bob Foster | Chris | 1 | 1 |
| Christopher Cousins | Nolan Burns | Eli Wilson | 1 | 1 |
| Daniella Alonso | Maria Sanchez | Reyna Reyes | 1 | 1 |
| Danielle Bisutti | Claire Panchard | Lynn | 1 | 1 |
| David Barry Gray | Bert Kramer | Greg Gilbert | 1 | 1 |
| Elizabeth Pan | Reporter #1 | Nurse Pam | 1 | 3 |
| Erik Palladino | Coach Rome | Mitch Thompson | 1 | 1 |
| Gina Ravera | Marsha Stoller | Dawn | 1 | 1 |
| Jeffrey Pierce | Wyatt Monroe | Ray Daniels | 1 | 1 |
| Joe Nieves | Boyd Gamble | Greg | 1 | 1 |
| Kenneth Mitchell | Paul Whittaker | Elliott | 1 | 1 |
| Meredith Monroe | Elise Resner | Leah Hudley | 1 | 1 |
| Robert Pine | Gerry Finnegan | Jim Wallace | 1 | 1 |
| Scott Michael Campbell | Lee Travis | Gregory Milford | 1 | 1 |
| Tom Amandes | Aaron Stokes | Charlie Jensen | 1 | 1 |
| Tom Irwin | Simon Campbell | Father Mark | 1 | 1 |
| Tom Virtue | Judge Fitz | Dr. Warren | 1 | 1 |
| Claudia Choi | CSU Photo Technician, Video Technician | Maggie | 2 | 1 |
| Russell Edge | Jones | Anesthesiologist | 2 | 1 |
| Brennan Elliott | Jason Cosway | Jake | 1 | 1 |
| Chandra West | Maggie Vega | Val Woodward | 1 | 1 |
| Chris L. McKenna | Simon Westport | Colin Bowman | 1 | 1 |
| David Eigenberg | Peter Connelly | Frank | 1 | 1 |
| Elena Campbell-Martinez | Mama | Nurse | 1 | 1 |
| Jared Kusnitz | Adam Lane | Ryan Crawford | 1 | 1 |
| Jessica Tuck | Joy McHugh | Rosie Graham | 1 | 1 |
| Jim Gleason | Dr. Barry Frank | Detective Fallon | 1 | 1 |
| John M. Jackson | Rod Halstead | Carl Davis | 1 | 1 |
| Kathe Mazur | Anya Mishkin | Terri Bishop | 1 | 1 |
| Keiko Agena | Kelly | Sister Amy | 1 | 1 |
| Larry Sullivan | Samuel Lynchberg | Bob Schwartz | 1 | 1 |
| Leslie Hope | Gwenn Harwin | Linda | 1 | 1 |
| Linara Washington | Christina Marx | Tracy Woods | 1 | 1 |
| Lisa Waltz | Laurie Horn | Rachel | 1 | 1 |
| Monica Keena | Colleen McCann | Kayla Lindy | 1 | 3 |
| Perrey Reeves | Helen Parker | Kelly | 1 | 1 |
| Rebecca Field | Marilyn Kane | Rachel Gold | 1 | 1 |
| Shane Johnson | Deputy Adam Jones | Dave Walker | 1 | 1 |
| Stacy Edwards | Jessica Banks | Maria Wilson | 1 | 1 |
| T.J. Ramini | Prince Khalid Hasheim | Doug Iverson | 1 | 1 |
| Siena Goines | Donna Vincennes | Claudia Jenkins | 1 | 2 |
| Aldis Hodge | Azi | Esau Ajawke | 1 | 1 |
| Amy Aquino | Janine Marks | Claire | 1 | 1 |
| Amy Rosoff | Katrina | Andrea | 1 | 1 |
| Austin Highsmith Garces | Camille Roberts | Nina | 1 | 1 |
| Camille Chen | Donna Brooks | Lucia | 1 | 1 |
| Charles Malik Whitfield | Charles Wyler | Ty | 1 | 1 |
| Don McManus | Archie "The Savannah Hammer" Bronstein | Bruce Tanner | 1 | 1 |
| Ian Nelson | Troy Kenworth | Kirk Jensen | 1 | 1 |
| Jeanette Brox | Ayyana Holder | Lizzie Hagan | 1 | 1 |
| Jennifer Hall | Rebecca Strong | Renee | 1 | 1 |
| Joey Honsa | Sid's Wife | Emily | 1 | 1 |
| John Getz | Dr. Gustavo Bauer | Mr. Kent | 1 | 1 |
| Katie Lowes | Rachel Maddox | Kendra Walker | 1 | 1 |
| Katie Silverman | Little Girl | Young Amelia | 1 | 1 |
| Laura Niemi | Bernie Cosetti | Betty Crawford | 1 | 1 |
| Mackenzie Astin | Phillip Bartlett | Dan Meyer | 1 | 1 |
| Melinda Page Hamilton | Diana Harris | Donna Keating | 1 | 1 |
| Patrick O'Connor | Chris Markum | Minister | 1 | 1 |
| Tim Guinee | Andrew Haynes | Seth | 1 | 1 |
| Ajay Vidure | CSU tech | Dr. Singh | 1 | 1 |
| Amy Stewart | Brandy Rossi | Beth Burton | 1 | 1 |
| Andrew Borba | Mr. Mudge | Will Martin | 1 | 1 |
| Anne Marie Howard | Angela Russo | Pam | 1 | 1 |
| Brett DelBuono | Louis Prince | Justin Tanner | 1 | 1 |
| Bruno Campos | Calvin Creason | Dr. Scott Barker | 1 | 1 |
| Clare Carey | Noreen Hixton | Pam Tanner | 1 | 1 |
| Drew Rausch | Officer Ted Lane | Eric | 1 | 1 |
| Erin Way | Audrey O'Neill | Jenna | 1 | 1 |
| George Newbern | Howard Peterson | Dr. Brian Reynolds | 1 | 1 |
| Idara Victor | Patty | Pilar | 1 | 1 |
| Jeff Hephner | Edmund Drake, Zalman Drake | Jerry | 1 | 1 |
| Jeris Lee Poindexter | Older Man | Mechanic | 1 | 1 |
| Joshua Wolf Coleman | Reporter #2 | LAPD #2 | 1 | 1 |
| Mageina Tovah | Veronica Harris | Rebecca Hobart | 1 | 1 |
| Mark Espinoza | Professor Stevenson | Richard Huvane | 1 | 1 |
| Max Arciniega | Billy Bash | Paul Gonzales | 1 | 1 |
| Susan Ruttan | Eleanor Pike | Nora | 1 | 1 |
| Suzy Nakamura | Jennifer Wong | Margaret Delhom | 1 | 1 |
| Alexie Gilmore | Anita Miller | Sarah Freemont | 1 | 1 |
| Benjamin Ciaramello | Vin | Michael Woods | 1 | 1 |
| Chase Kim | FBI Specialist | Cop | 1 | 1 |
| Dahlia Salem | Tory Westchester | Gloria Murphy | 1 | 1 |
| Doug Simpson | Henry Browning | Troy | 1 | 1 |
| Jamie Hill | Petra Vasker | Hot Girl | 1 | 1 |
| Jillian Armenante | Susan Mailer | Arlene Perkins | 1 | 1 |
| Karl T. Wright | Dr. Chuck Vaughn | Dr. Dave | 1 | 1 |
| Kim Hawthorne | Angela Matthews | Joan | 1 | 1 |
| Matt Roth | Philip Dagmar | Jack | 1 | 1 |
| Ramona DuBarry | Reporter | Woman | 1 | 1 |
| Raymond Ma | Lucky Dragon Owner | Kwan | 1 | 1 |
| René Ashton | Amelia Weiss | Ellen | 1 | 1 |
| Samantha Quan | Kathleen Park | Kimmy | 1 | 1 |
| Cullen Douglas | Noah Lewis | Hal Jarvis | 1 | 1 |
| Devon Gummersall | Matt Haley | Ronald Bergin | 1 | 1 |
| Erica Shaffer | Extra Reporter | Angie | 1 | 1 |
| Glenn Taranto | Douglas Lawson | Detective Lampert | 1 | 1 |
| Jamison Haase | FBI Agent Lucas | Policeman | 1 | 1 |
| Marin Hinkle | Dr. Rebecca Ellins | Beverly | 1 | 1 |
| Marisa Quintanilla | Anne Cardinal | June | 1 | 1 |
| Paul Cassell | Marcus Conway | Jason Dupree | 1 | 1 |
| Amy K. Harmon | Darlene Stevens | Tina | 1 | 1 |
| Brad Grunberg | Gary | Mover | 1 | 1 |
| Bruce Katzman | Benjamin Morris | Dr. Joe Hoffman | 1 | 1 |
| Dan Warner | House Security Detail | Daniel | 1 | 1 |
| Drew Osborne | Owen | Stevie Walker | 1 | 1 |
| Jeff Davis | Dave Johnson | Garry | 1 | 1 |
| Kari Coleman | Julia Hammond | Laura Wallace | 1 | 1 |
| Kevin Foster | Will Medina | Officer #1 | 1 | 1 |
| Larry Clarke | Tony Muller | George Walters | 1 | 1 |
| Rodney J. Hobbs | Worker | Trauma Doctor | 1 | 1 |
| Timi Prulhiere | Talbot's Nurse | Ricky | 1 | 1 |
| Elimu Nelson | Frank Patchett | Greg O'Brien | 1 | 1 |
| Grace Rowe | Reporter #1 | Annette | 1 | 1 |
| Hannah Marks | Jordan Gibbs | Ruby | 1 | 1 |
| Josh Latzer | Gary Duffin | Guard #2 | 1 | 1 |
| Matt Riedy | Attorney | Ken Wilson | 1 | 1 |
| Patrick Robert Smith | Marty Bentley | Coach Patterson | 1 | 1 |
| Paul Clausen | Charles Utley | Vick Graham | 1 | 1 |
| Antonio Elias | Chris Nunez | Collin | 1 | 1 |
| Jeffrey Nicholas-Brown | Freddie Baker | Andrew | 1 | 1 |
| Shelli Boone | Chantal | Bridget | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.