
| Treat Williams | ... | Dr. Andrew ''Andy'' Brown (89 episodes, 2002-2006) |

| Gregory Smith | ... | Ephram Brown (89 episodes, 2002-2006) |

| Emily VanCamp | ... | Amy Abbott (89 episodes, 2002-2006) |
 | Debra Mooney | ... | Edna Harper (89 episodes, 2002-2006) |
 | John Beasley | ... | Irv Harper (89 episodes, 2002-2006) |

| Vivien Cardone | ... | Delia Brown (89 episodes, 2002-2006) |

| Chris Pratt | ... | Bright Abbott (89 episodes, 2002-2006) |

| Tom Amandes | ... | Dr. Harold Abbott (89 episodes, 2002-2006) |

| Stephanie Niznik | ... | Nina Feeney (82 episodes, 2002-2006) |
 | Merrilyn Gann | ... | Rose Abbott (76 episodes, 2002-2006) |

| Scott Wolf | ... | Dr. Jake Hartman (38 episodes, 2004-2006) |

| Sarah Drew | ... | Hannah Rogers (38 episodes, 2004-2006) |
 | Jan Broberg Felt | ... | Louise (32 episodes, 2002-2006) |

| Sarah Lancaster | ... | Madison Kellner (19 episodes, 2003-2005) |

| Marcia Cross | ... | Dr. Linda Abbott (18 episodes, 2003-2004) |

| Justin Baldoni | ... | Reid Bardem (15 episodes, 2005-2006) |

| Mike Erwin | ... | Colin Hart (15 episodes, 2002-2004) |

| Whitney Lee | ... | Brittany Clark (15 episodes, 2003-2006) |
 | Nancy Everhard | ... | Sharon Hart (13 episodes, 2002-2004) |

| Ben Hammond | ... | Sam Feeney (13 episodes, 2004-2006) |

| Nora Zehetner | ... | Laynie Hart (12 episodes, 2003-2004) |

| Lee Garlington | ... | Brenda Baxworth (12 episodes, 2002-2005) |
 | Katie Millar | ... | Page (11 episodes, 2002-2004) |

| Anne Heche | ... | Amanda Hayes (10 episodes, 2004-2005) |
 | Micaela Nelligan | ... | Martha Thompson (10 episodes, 2002-2005) |
 | Gordon Johnson | ... | Mr. Jensen (10 episodes, 2002-2006) |

| Paul Wesley | ... | Tommy Callahan (9 episodes, 2003-2004) |

| Ryan Armstrong | ... | Sam Feeney (8 episodes, 2002-2004) |

| Michael Flynn | ... | James Hart (8 episodes, 2002-2003) |
 | Steve Anderson | ... | Thurman Revere (8 episodes, 2002-2006) |
 | Steven R. McQueen | ... | Kyle Hunter (7 episodes, 2005-2006) |
 | Brooks Bedore | ... | Arnie (7 episodes, 2002-2004) |
 | Haley McCormick | ... | Susie Clark (7 episodes, 2002-2005) |

| Steven Anderson | ... | Thurman Revere (7 episodes, 2002-2005) |

| Jason Beghe | ... | John Hayes (6 episodes, 2004-2005) |

| Lukas Behnken | ... | Topher Cole (6 episodes, 2005) |
 | Valerie Welcker | ... | Kayla (6 episodes, 2002-2003) |
 | Jeff Olson | ... | Davenport (6 episodes, 2002-2005) |

| Charlie Weber | ... | Jay (5 episodes, 2003-2004) |
 | Freda Foh Shen | ... | Dr. Chao (5 episodes, 2005) |
 | David Downs | ... | Principal Ackerman (5 episodes, 2003-2005) |

| Scott Christopher | ... | Coach Austin / ... (5 episodes, 2002-2003) |

| Brenda Strong | ... | Julia Brown (5 episodes, 2002-2005) |

| Cody McMains | ... | Wendell (4 episodes, 2002-2003) |

| Bret Loehr | ... | Magilla (4 episodes, 2002) |

| Ben Weber | ... | Chris Beals (4 episodes, 2003-2004) |

| Ian Vogt | ... | Matthew Lansing (4 episodes, 2003) |
 | Shane Haboucha | ... | Charlie Hayes (4 episodes, 2004-2005) |
 | Adam Clinton | ... | Dwayne / ... (4 episodes, 2002-2003) |

| Steve O'Neill | ... | The Sheriff / ... (4 episodes, 2003-2004) |
 | Michelle Peterson | ... | Nurse #2 / ... (4 episodes, 2002-2006) |
 | Bruce Newbold | ... | Dan Clark / ... (4 episodes, 2002-2004) |

| Luciana Carro | ... | Stephanie Meyer (4 episodes, 2006) |

| Dylan Walsh | ... | Carl Feeney (3 episodes, 2003-2004) |

| Beth Grant | ... | Miss Violet (3 episodes, 2002-2003) |

| Philip Baker Hall | ... | Dr. Donald Douglas (3 episodes, 2003-2004) |

| Tim DeKay | ... | Reverend Keyes (3 episodes, 2002-2003) |

| Leslie Hope | ... | Laurie Fields (3 episodes, 2006) |

| Jimmy Bennett | ... | Sam Feeney (3 episodes, 2004-2005) |

| Robert Peters | ... | Marty Maxwell (3 episodes, 2002-2003) |

| James Earl Jones | ... | Will Cleveland (3 episodes, 2003-2004) |
 | Roger Nelson | ... | Father Ivers (3 episodes, 2004-2005) |
 | Wendy Watabe Peterson | ... | Nurse #1 / ... (3 episodes, 2002-2003) |
 | Brenda Sue Cowley | ... | Mrs. Clark (3 episodes, 2003-2004) |
 | Dan Merket | ... | Chuck Dodd / ... (3 episodes, 2003) |
 | Duane Stephens | ... | Wally (3 episodes, 2003-2005) |

| Michael Coe | ... | Clueless Student / ... (3 episodes, 2003-2004) |

| Kelly Carlson | ... | Ada (3 episodes, 2004-2006) |

| Jane Krakowski | ... | Dr. Gretchen Trott (2 episodes, 2002-2003) |

| Kate Mara | ... | Kate Morris (2 episodes, 2003) |
 | Doris Belack | ... | Ruth Hoffman (2 episodes, 2002) |
 | Mark Rydell | ... | Jacob Hoffman (2 episodes, 2002) |

| Betty White | ... | Carol Roberts (2 episodes, 2003-2004) |
 | Devon Reilly | ... | Gemma Maxwell (2 episodes, 2003) |
 | Tom Parker | ... | Brian Hartman (2 episodes, 2005) |

| Charles Durning | ... | Eugene Brown (2 episodes, 2006) |

| John Savage | ... | Daniel Maxwell (2 episodes, 2002-2005) |

| Richard Herd | ... | Herb Roberts (2 episodes, 2003-2004) |

| Andrea Andes | ... | Jillian (2 episodes, 2005) |

| Christopher Egan | ... | Nick Bennett (2 episodes, 2006) |

| Erinn Hayes | ... | Mindy Wheeler (2 episodes, 2004) |

| Mark Elliott Silverberg | ... | Josh Stein (2 episodes, 2006) |
 | Paul Kiernan | ... | Dr. Castle / ... (2 episodes, 2002) |

| Kirsten Nelson | ... | Ellie Beals (2 episodes, 2003-2005) |
 | Matthew Pohlson | ... | Dean Kelly (2 episodes, 2004-2005) |
 | Lisa Waltz | ... | Diane Shumacher (2 episodes, 2004) |

| Vicki Davis | ... | Beth (2 episodes, 2006) |

| Monnae Michaell | ... | Madeleine (2 episodes, 2006) |

| Michelle Nolden | ... | Kathy Carmody (2 episodes, 2006) |
 | Greg Ilk | ... | Richie / ... (2 episodes, 2002-2003) |

| Eyal Podell | ... | Justin (2 episodes, 2003-2005) |

| Annie Burgstede | ... | Pippi (2 episodes, 2005) |
 | Oscar Rowland | ... | Mort (2 episodes, 2003-2005) |

| Jayne Brook | ... | Mrs. Rogers (2 episodes, 2005) |

| Austin Tichenor | ... | Dr. Bass (2 episodes, 2005) |

| Melinda Renee | ... | Concierge / ... (2 episodes, 2003-2005) |

| Debbie Ellis | ... | Jan / ... (2 episodes, 2004-2005) |
 | Joel Bishop | ... | The Pharmacist (2 episodes, 2003-2004) |
 | Brighton Hertford | ... | Katie (2 episodes, 2004) |

| Albie Selznick | ... | Dr. Albert Franco (2 episodes, 2006) |
 | Austin Levetan | ... | Bud (2 episodes, 2002) |
 | Annette Wright | ... | Everwoody / ... (2 episodes, 2003) |

| Philipp Karner | ... | Josh Walker (2 episodes, 2004) |
 | Rhett Willman | ... | Mr. Perch (2 episodes, 2005) |
 | Susanne Sutchy | ... | Jessica Hunter (2 episodes, 2005-2006) |
 | Tim Threlfall | ... | Priest / ... (2 episodes, 2002-2005) |

| Tod Huntington | ... | Frat Boy #2 / ... (2 episodes, 2003-2004) |
 | Jennifer Erekson | ... | Arnie's Mom (2 episodes, 2003) |

| Heather Beers | ... | Julie (2 episodes, 2004-2006) |
 | Victoria Mallory | ... | Mrs. Dudley (2 episodes, 2002-2005) |

| Jodi Russell | ... | Debbie West (2 episodes, 2003-2005) |
 | James Jamison | ... | Bypass Technician / ... (2 episodes, 2003-2004) |

| Joyce Cohen | ... | Millie Sullivan / ... (2 episodes, 2003) |

| Ilyse Mimoun | ... | Mrs. Wilkins (2 episodes, 2003-2005) |
 | Nancy Roth | ... | Female Counselor / ... (2 episodes, 2003-2006) |
 | Karri Knudsen | ... | ICU Nurse / ... (2 episodes, 2004-2005) |
 | Anne Sward | ... | Ms. Caleb / ... (2 episodes, 2002-2004) |
|
| Greg Berlanti | .... | executive producer (89 episodes, 2002-2006) |
| Scott Swanson | .... | associate producer / co-producer (89 episodes, 2002-2006) |
| Rina Mimoun | .... | executive producer / co-executive producer / ... (88 episodes, 2002-2006) |
| Michael Green | .... | supervising producer / co-executive producer / ... (66 episodes, 2002-2005) |
| Mickey Liddell | .... | executive producer (52 episodes, 2002-2006) |
| Andrew A. Ackerman | .... | co-executive producer / producer (38 episodes, 2002-2006) |
| Anna Fricke | .... | producer / co-producer (38 episodes, 2004-2006) |
| Todd Ulman | .... | associate producer (35 episodes, 2004-2006) |
| Tom Luse | .... | producer / co-producer (24 episodes, 2004-2006) |
| David Hudgins | .... | co-producer (22 episodes, 2005-2006) |
| Bruce Miller | .... | supervising producer / co-executive producer (12 episodes, 2004-2005) |
| Tom Garrigus | .... | co-executive producer (12 episodes, 2005-2006) |
| Josh Reims | .... | co-executive producer (12 episodes, 2005-2006) |
| Nancy Won | .... | co-producer (12 episodes, 2005-2006) |
| Vanessa Taylor | .... | supervising producer / producer (5 episodes, 2002-2004) |
| Joan Binder Weiss | .... | producer / co-producer (5 episodes, 2002-2004) |
| David Petrarca | .... | producer (4 episodes, 2004-2005) |
| Sherri Cooper | .... | co-producer (4 episodes, 2005) |
| Oliver Goldstick | .... | consulting producer (1 episode, 2002-2003) |
|
| Carl Ogawa | .... | associate producer (unknown episodes) |
| Ethan Smith | .... | producer: New York (unknown episodes) |
| |
|
| Kevin Kennedy | .... | key grip (89 episodes, 2002-2006) |
| John Farr | .... | gaffer (86 episodes, 2002-2006) |
| Glade Quinn | .... | dolly grip (86 episodes, 2002-2006) |
| John Raymer | .... | best boy electric (83 episodes, 2002-2006) |
| Brian Sullivan | .... | camera operator / camera operator: "a" camera (83 episodes, 2002-2006) |
| Kurtis Burr | .... | assistant camera (61 episodes, 2002-2006) |
| Andrew Mitchell | .... | Steadicam operator / camera operator: "b" camera (48 episodes, 2003-2006) |
| Gary Johnson | .... | assistant camera (29 episodes, 2005-2006) |
| Kelly Klindt | .... | grip (16 episodes, 2005-2006) |
| Peter Weiland | .... | lighting technician (4 episodes, 2002-2003) |
| Zep Christensen | .... | first assistant camera (4 episodes, 2006) |
| Dean Aoki | .... | first assistant camera: "b" camera (2 episodes, 2005) |
| Mike Lookinland | .... | first assistant camera: "a" camera (2 episodes, 2005) |
|
| Matthew J. Siegel | .... | camera operator (unknown episodes, 2003) |
| Samuel Fischer | .... | lighting console operator (unknown episodes) |
| Schane Godon | .... | assistant camera (unknown episodes) |
| George Griner | .... | camera operator (unknown episodes) |
| Jason Jensen | .... | additional first assistant camera (unknown episodes) |
| J.J. Johnson | .... | dolly grip (unknown episodes) |
| Tom Kolafa | .... | lighting technician (unknown episodes) |
| Shawn Lacy | .... | best boy grip (unknown episodes) |
| Fritz Lindbeck | .... | best boy grip (unknown episodes) |
| Justin M. Lubin | .... | still photographer (unknown episodes) |
| Don Muirhead | .... | Steadicam operator / camera operator (unknown episodes) |
| Michael L. Schaertl | .... | camera operator (unknown episodes) |
| |
|
| Rebecca Poulos | .... | script supervisor (87 episodes, 2002-2006) |
| Mike Steaheli | .... | set medic (81 episodes, 2002-2006) |
| Oscar Balderrama | .... | intern production assistant / assistant to producers / ... (61 episodes, 2002-2006) |
| John E. Pogue | .... | executive story editor / story editor / ... (44 episodes, 2003-2005) |
| Nancy Govednik | .... | assistant accountant (42 episodes, 2004-2006) |
| David Hudgins | .... | story editor (42 episodes, 2004-2006) |
| Derek E. Mellus | .... | assistant location manager (42 episodes, 2004-2006) |
| Peter Silberstein | .... | set production assistant (42 episodes, 2004-2006) |
| Johanna Beatty | .... | set location assistant (20 episodes, 2005-2006) |
| Mimi Davis | .... | key location scout (14 episodes, 2003-2004) |
| Barbie Kligman | .... | executive story editor (11 episodes, 2005-2006) |
| Sherri Cooper | .... | executive story editor (7 episodes, 2004-2005) |
| Andrew Langton | .... | location manager (4 episodes, 2005-2006) |
| Christine Salmas | .... | production accountant (3 episodes, 2004-2005) |
| Suzanne Bingham | .... | script supervisor (3 episodes, 2004) |
| Justin Ritson | .... | key production assistant: New York (2 episodes, 2004) |
| Mike Miner | .... | production coordinator (2 episodes, 2005-2006) |
|
| Holly Ollis | .... | publicist (unknown episodes, 2002-2005) |
| Maire Ni Rochain | .... | production coordinator: New York (unknown episodes, 2005) |
| Kyle Villegas | .... | production secretary: New York (unknown episodes, 2005) |
| Greg W. Anderson | .... | stand-in (unknown episodes) |
| Joshua S. Ashdown | .... | extras wrangler (unknown episodes) |
| Hayley Badham | .... | production assistant (unknown episodes) |
| Seth Cohen | .... | production assistant (unknown episodes) |
| Tina Edwards | .... | payroll accountant (unknown episodes) |
| Sharon Eldridge | .... | script coordinator (unknown episodes) |
| Nathan Fackrell | .... | production assistant (unknown episodes) |
| Jason S. Foster | .... | production assistant (unknown episodes) |
| Rachel Gonzales | .... | production assistant / production assistant: New York (unknown episodes) |
| Damon Michael Gordon | .... | assistant location manager / assistant location manager: New York (unknown episodes) |
| Steven Greenstreet | .... | production assistant (unknown episodes) |
| Ani Heinig | .... | location manager (unknown episodes) |
| Adam Henderson | .... | key on-set production assistant (unknown episodes) |
| Andrew K. Hodge | .... | assistant location manager (unknown episodes) |
| Jeff Horne | .... | office & set production assistant (unknown episodes) |
| Astrid Kemnitz | .... | first assistant accountant (unknown episodes) |
| Starla Latham | .... | production office coordinator (unknown episodes) |
| Ronny Merdinger | .... | assistant production office coordinator: New York (unknown episodes) |
| Jennifer Miller | .... | location scout (unknown episodes) |
| Marshall D. Moore | .... | location manager (unknown episodes) |
| Matthew Morgan | .... | on-set location assistant (unknown episodes) |
| Dalton Newsom | .... | production assistant (unknown episodes) |
| Yuell Newsome | .... | stock librarian (unknown episodes) |
| Carl Ogawa | .... | assistant to producer (unknown episodes) |
| David Oster | .... | production assistant (unknown episodes) |
| Jonathan Roatcap | .... | production assistant (unknown episodes) |
| Sheena Ross | .... | second assistant accountant (unknown episodes) |
| David Schulner | .... | story editor (unknown episodes) |
| Anthony Straga | .... | location assistant (unknown episodes) |
| Canella Williams | .... | production assistant (unknown episodes) |
| |