All 66 actors in both ER and Parenthood
66 actors have appeared in both ER and Parenthood, across 434 episodes. The most-credited is Frances Sternhagen, Millicent Carter in ER and Blanche Braverman in Parenthood.
| Actor | In ER | In Parenthood | Eps | Eps |
|---|---|---|---|---|
| Frances Sternhagen | Millicent Carter | Blanche Braverman | 19 | 1 |
| Tina Lifford | Evelyn Pratt | Renee Trussell | 2 | 13 |
| Tom Amandes | David Gardner | Dr. Pelikan | 1 | 11 |
| Amanda Foreman | Missy Voltaire | Suze Lessing | 1 | 9 |
| David Denman | Jeremy Willis / "Angel" | Ed Brooks | 1 | 11 |
| Phil Abrams | Rodney | Phil Lessing | 1 | 8 |
| Paul Dooley | Henry Lewis | Rocky | 4 | 1 |
| Jurnee Smollett | Romy | Heather Hall | 1 | 7 |
| Sumalee Montano | Duvata Mahal | Malea | 10 | 1 |
| Ethan Flower | Brit #2 | Grant | 1 | 2 |
| Kelly Wolf | Mrs. Norris | Mrs. McKindall | 1 | 4 |
| Marcus Folmar | Foreman | Clerk | 1 | 1 |
| Googy Gress | Head Lac | Jeff Wormley, Dog Owner, Doug | 1 | 4 |
| John Rubinstein | Dr. Kenner | Principal Liam Taylor | 1 | 3 |
| Brad Grunberg | Masked Man | Louie | 1 | 1 |
| Jillian Bach | Med Student Penny Nicholson | Andie | 5 | 1 |
| Derick Alexander | Hospital Officer | Jon | 3 | 2 |
| Lisa M. Haskins | Circulating Nurse | Alice | 1 | 2 |
| Paula Newsome | Rehab Receptionist Margaret | Dr. Robertson | 1 | 2 |
| Christopher Michael | Security Officer | Captain | 5 | 1 |
| Irene Choi | Jung Koo | Donna | 1 | 2 |
| Jim O'Heir | McKenna | Pete | 1 | 1 |
| Shi Ne Nielson | Med Student Sheila | Interviewer | 4 | 1 |
| Ren Hanami | NICU Nurse | Regular Teacher | 2 | 1 |
| Gary Riotto | Cousins | Man | 2 | 1 |
| Jennifer Jostyn | Prosthetist | Nurse | 2 | 1 |
| Betsy Brandt | Franny Myers | Sandy | 1 | 1 |
| Gregg Daniel | Mr. Powell | Reverend Gordon | 1 | 1 |
| Maura Soden | Miranda | Doctor | 1 | 1 |
| Stewart Skelton | John Taylor | Tony Mann | 1 | 1 |
| Wayne Lopez | Benitez | Carlos | 1 | 1 |
| Charles Emmett | Derezin | Volunteer Coordinator | 1 | 1 |
| Kimleigh Smith | Ringwood | Nurse #2 | 1 | 1 |
| Joe Marinelli | Joey | Professor Romano | 1 | 1 |
| Judith Moreland | Nurse Terry | Adoption Agent | 1 | 1 |
| Karl T. Wright | Dr. Norris | Richard | 1 | 1 |
| Michael C. Mahon | Joe | Alan Lord | 2 | 1 |
| Shane Blades | Marcus Udesky | Dylan's Dad | 1 | 1 |
| Suzanne Krull | Mary Grant | Sharon | 1 | 1 |
| Anastasia Basil | Detective Weiss | Melanie | 1 | 1 |
| Asante Jones | Workman #1 | Coach Meyers | 1 | 1 |
| Bob Bancroft | Albert | Jay Ramone | 1 | 1 |
| Christopher Goodman | Andrew | Nicholas Berger | 1 | 1 |
| Demond Robertson | Paramedic Lowder | Ed | 1 | 1 |
| Lisa Darr | Nadine Wilkes | Sarah's Doctor | 1 | 1 |
| Martin Yu | Jimmy | Tom | 1 | 1 |
| Meera Simhan | Mandy | Mrs. Chopra | 1 | 1 |
| Rebecca Metz | Waitress | Alexis | 1 | 1 |
| Steven Lee Allen | Contractor | Scott Morris | 1 | 1 |
| Alain Uy | Burke | Edwin Chung | 1 | 1 |
| Joshua Wolf Coleman | Respiratory Therapist | Doctor | 1 | 1 |
| Khleo Thomas | Brian | Guy in Cage | 1 | 1 |
| Carol Abney | Fire Chief Amanda Miller | Michelle Chambers | 1 | 1 |
| Gary Kraus | CJ | Emmett's Dad | 1 | 1 |
| Stacy Barnhisel | Nancy | Trish | 1 | 1 |
| David Douglas | Miller | Arrison Turner | 1 | 1 |
| Veralyn Jones | Agent Vickery, Mrs. Powell | Carla | 2 | 1 |
| Alan Blumenfeld | Rob Savage | Judge | 1 | 1 |
| Bonnie Burroughs | Candy | Linda | 1 | 1 |
| Carrie Armstrong | Instructor | Clerk | 1 | 1 |
| Earl Billings | Ray Jamison | Pawn Shop Owner | 1 | 1 |
| Joey Nader | Henderson | Manager | 1 | 1 |
| Alison White | Scrub Nurse | Mrs. Brewster | 1 | 1 |
| Lacey Ellison | Lucy | Young Girl at Clinic | 1 | 1 |
| Kimble Jemison | Tom | Husband at Party | 1 | 1 |
| Bambadjan Bamba | Psychotic | Frank | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.