An engaging (and periodically serious) look at hospital work through the eyes of a young intern, coping with unusual challenges presented by colleagues as well as patients. The show is a smart mix of humor and social commentary, and has had a diverse lineup of guest stars, including Colin Hay of Men at Work, Brendan Fraser, Dick Van Dyke and, in one of (more…)
Donald Faison Christopher Turk 189 Episodes (2001-2019)
John C. McGinley Dr. Perry Cox 189 Episodes (2001-2019)
Zach Braff John `J.D.' Dorian 188 Episodes (2001-2019)
Ken Jenkins Dr. Bob Kelso 183 Episodes (2001-2019)
Sarah Chalke Elliot Reid 180 Episodes (2001-2019)
Judy Reyes Carla Espinosa 176 Episodes (2001-2019)
Neil Flynn The Janitor 173 Episodes (2001-2019)
Robert Maschio Todd Quinlan 103 Episodes (2001-2019)
Sam Lloyd Ted Buckland 73 Episodes (2001-2019)
Christa Miller Jordan Sullivan 56 Episodes (2001-2019)
Aloma Wright Laverne Roberts 24 Episodes (2001-2019)
Eliza Coupe Denise Mahoney 18 Episodes (2006-2019)
Michael Mosley Drew Suffin 17 Episodes (2006-2019)
Kerry Bishé Lucy Bennett 17 Episodes (2006-2019)
Dave Franco Cole Aaronson 16 Episodes (2006-2019)
Christa Miller Lawrence Jordan Sullivan 56 Episodes (2001-2019)
Johnny Kastl Doug, Dr. Doug Murphy 38 Episodes (2001-2009)
Travis Schuldt Keith 20 Episodes (2006-2009)
Charles Chun Dr. Wen 16 Episodes (2001-2006)
Elizabeth Banks Dr. Kim Briggs, Kim 12 Episodes (2006-2009)
Scott Foley Sean, Sean Kelly 12 Episodes (2002-2016)
Tara Reid Danni 11 Episodes (2003-2005)
Michael Hobert Lonnie, Pizza Guy 10 Episodes (2002-2016)
Heather Graham Dr. Molly Clock, Molly Clock 9 Episodes (2004-2005)
Michael Learned Mrs. Wilk, Mrs. Wilks 8 Episodes (2006-2009)
Tom Cavanagh Dan, Dan Dorian 7 Episodes (2002-2009)
Joe Rose Troy 7 Episodes (2003-2016)
Martin Klebba Randall 7 Episodes (2004-2009)
Bellamy Young Dr. Miller 6 Episodes (2004-2009)
Betsy Beutler Denise, Katie 6 Episodes (2009-2009)
Sonal Shah Sunny 6 Episodes (2009-2009)
Andrew Miller Jack 5 Episodes (2006-2009)
Jay Kenneth Johnson Dr. Matthews 5 Episodes (2006-2016)
Nicole Sullivan Jill Tracy 5 Episodes (2001-2009)
Matt Winston Dr. Jeffrey Steadman, Dr. Steadman, Jeffrey 5 Episodes (2001-2009)
Taran Killam Jimmy 5 Episodes (2009-2009)
Chrystee Pharris Kylie 5 Episodes (2005-2005)
Jordan Zucker Lisa 5 Episodes (2006-2006)
Kate Micucci Gooch, Stephanie 5 Episodes (2009-2009)
Kit Pongetti Lady 5 Episodes (2009-2009)
Philip McNiven Roy 5 Episodes (2002-2009)
Nicky Whelan Maya 5 Episodes (2009-2010)
Windell D. Middlebrooks Capt. Duncook 5 Episodes (2009-2010)
Amy Smart Jamie, Jamie Moyer 4 Episodes (2003-2009)
Michael Weston Pvt Brian Dancer, Pvt. Brian Dancer 4 Episodes (2007-2007)
Richard Kind Mr. Corman 4 Episodes (2003-2004)
Rick Schroder Nurse Paul 4 Episodes (2003-2003)
Todd Bosley Howie 4 Episodes (2009-2009)
Elizabeth Bogush Alex, Alex Hanson 4 Episodes (2002-2009)
Josh Randall Jake 4 Episodes (2005-2006)
Michael McDonald Mike Davis, Mr. Cropper 4 Episodes (2001-2010)
Aziz Ansari Ed 4 Episodes (2009-2009)
Bob Clendenin Dr. Zeltzer 4 Episodes (2002-2009)
Deonte Gordon Deonte, Shawn 4 Episodes (2006-2009)
George Miserlis Crispin 4 Episodes (2002-2009)
Robert Clendenin Dr. Zeltzer 4 Episodes (2002-2009)
Matthew Moy Trang 4 Episodes (2009-2010)
Brendan Fraser Ben Sullivan 3 Episodes (2002-2004)
Freddy Rodriguez Mark 3 Episodes (2003-2004)
Lela Lee Bonnie 3 Episodes (2002-2002)
Phill Lewis Hooch 3 Episodes (2005-2005)
Courteney Cox Dr. Maddox 3 Episodes (2009-2009)
Markie Post Elliot's Mom, Lily Reid 3 Episodes (2002-2006)
Sarah Lancaster Gift Shop Lisa, Lisa 3 Episodes (2003-2006)
Julie Hudson Dr. Gerson, Dr. Gerst 3 Episodes (2002-2003)
Meredith Roberts Kathy 3 Episodes (2005-2009)
Mike Hobert Lonnie 3 Episodes (2004-2005)
Paul Perry Randall 3 Episodes (2002-2009)
Shaughn Buchholz Cabbage, Jason 3 Episodes (2006-2009)
Steven Cragg Lt. Underhill 3 Episodes (2009-2010)
Biff Yeager Dr. Walch, Pathologist 2 Episodes (2002-2004)
Dave Foley Headrick 2 Episodes (2006-2007)
Heather Locklear Julie Keaton 2 Episodes (2002-2002)
John Ritter Sam Dorian 2 Episodes (2002-2002)
Julianna Margulies Neena, Neena Broderick 2 Episodes (2004-2004)
Kelli Williams Kristen Murphy, Kristin 2 Episodes (2002-2002)
Keri Russell Melody 2 Episodes (2007-2007)
Lee Thompson Young Derek 2 Episodes (2009-2009)
Mandy Moore Julie 2 Episodes (2006-2006)
Michael J. Fox Dr. Kevin Casey 2 Episodes (2004-2004)
Sean Whalen Laddy 2 Episodes (2003-2016)
Colin Hay Himself, Troubadour 2 Episodes (2002-2009)
Carole Goldman Mrs. Goldstein 2 Episodes (2006-2016)
Angee Hughes Empfangsschwester, Nurse 2 Episodes (2001-2001)
Jill Tracy Elaine 2 Episodes (2003-2009)
Lane Davies Dr. Simon Reid, Simon Reid 2 Episodes (2002-2002)
Stephanie D'Abruzzo Patti, Patti Miller 2 Episodes (2007-2009)
Aseem Batra Josephine 2 Episodes (2006-2009)
Cody Estes Young J.D. 2 Episodes (2001-2002)
Don Perry Mr. Bober 2 Episodes (2002-2003)
Frank Encarnacao Dr. Mickhead 2 Episodes (2004-2006)
Joey Saravia Ralphie 2 Episodes (2003-2003)
Kathryn Joosten Mrs. Tanner 2 Episodes (2002-2009)
Katie O'Rourke Coffee Nurse 2 Episodes (2002-2009)
Lee Arenberg Dr. Moyer 2 Episodes (2003-2016)
Masi Oka Franklyn 2 Episodes (2002-2002)
Michael Cotter Michael, New Intern 2 Episodes (2002-2005)
Robert E. Beckwith Dr. Johnson 2 Episodes (2005-2006)
Alexander Chaplin Sam 1 Episode (2006)
Allison Smith Millie 1 Episode (2006)
Barry Bostwick Mr. Randolph 1 Episode (2003)
Benjamin King Milos 1 Episode (2007)
Billy Dee Williams Himself 1 Episode (2006)
Bronwen Booth Miss Myers 1 Episode (2004)
Christopher Meloni Dr. Norris 1 Episode (2003)
Cole Williams Mike 1 Episode (2002)
Colin Farrell Billy 1 Episode (2005)
D.L. Hughley Kevin Turk 1 Episode (2003)
David Copperfield Himself 1 Episode (2002)
Diane Vincent Whitney 1 Episode (2009)
Dick Van Dyke Dr. Townshend 1 Episode (2003)
Don Chastain 1 Episode (2002)
Embeth Davidtz Maddie 1 Episode (2004)
Eric Bogosian Dr. Gross 1 Episode (2003)
Eric Laneuville Dr. Lamar 1 Episode (2002)
Erik Estrada Himself 1 Episode (2003)
Frank Novak Pat 1 Episode (2009)
Glynn Turman George Valentine 1 Episode (2009)
J.P. Manoux Charlie 1 Episode (2006)
Jason Bateman Mr. Sutton 1 Episode (2006)
Jennifer Jostyn Dr. Simmons 1 Episode (2009)
Jon Polito Mr. Summers 1 Episode (2004)
Julia Campbell Mrs. Freemont 1 Episode (2009)
Julie Warner Allison 1 Episode (2004)
Ken Lerner Mr. James 1 Episode (2005)
Kevin Clash Elmo 1 Episode (2009)
Louie Anderson Louie Anderson 1 Episode (2001)
Matthew Perry Murray 1 Episode (2004)
Michael Boatman Ron 1 Episode (2005)
Mike Starr Mr. Iverson 1 Episode (2004)
Molly Shannon Denise 1 Episode (2004)
Nancy Daly Mrs. Gallin 1 Episode (2009)
Nestor Carbonell Dr. Ron Ramirez 1 Episode (2004)
Paul Dooley Paul 1 Episode (2009)
Peter Jacobson Mr. Foster 1 Episode (2006)
Reno Wilson Russell 1 Episode (2010)
Ryan Reynolds Spence 1 Episode (2003)
Sean Hayes Nick Murdoch 1 Episode (2001)
Stephen Furst Dr. Franklin 1 Episode (2002)
Tim Conlon Dean 1 Episode (2004)
Tom Ormeny Arthur 1 Episode (2010)
Travis Wester David Morrison 1 Episode (2002)
William Daniels Dr. Douglas 1 Episode (2002)
Alex Wright Patricia 1 Episode (2001)
Anthony Russell Mr. Lawton 1 Episode (2009)
Barry Williams 1 Episode (2009)
Bernie Kopell Mr. Moran 1 Episode (2003)
Cheryl Hines Paige 1 Episode (2006)
Chris Hogan Mr. Gerst 1 Episode (2005)
Ed Begley Jr. Dr. Bailey 1 Episode (2002)
Ellen Albertini Dow Betty 1 Episode (2005)
Hattie Winston Margaret Turk 1 Episode (2002)
Janet Carroll Mrs. Cooke 1 Episode (2006)
Jimmie Walker Jimmie Walker 1 Episode (2001)
Jimmie Walker 1 Episode (2001)
John Ducey Will Forte 1 Episode (2001)
Sam Jaeger Steve Larkin 1 Episode (2003)
Sarah Ramos Lindsay 1 Episode (2005)
Erica O'Keith Whitney 1 Episode (2006)
Josh Cooke Van 1 Episode (2009)
Steven Shaw Mr. Sloane 1 Episode (2002)
Fred Berry Himself 1 Episode (2003)
Jack Grinnage Marvell 1 Episode (2009)
Clay Aiken Kenny 1 Episode (2005)
Eric Jacobson Grover 1 Episode (2009)
John Bennett Perry Harrison 1 Episode (2004)
Phoebe Dorin Mrs. Jensen 1 Episode (2009)
Eamonn Roche Mr. Clark 1 Episode (2006)
Fred Stoller Mr. Hoffner 1 Episode (2002)
Maree Cheatham Mrs. Warner 1 Episode (2002)
Mary Gillis Mrs. Pratt 1 Episode (2002)
Matthew Richards Jared 1 Episode (2001)
Sean Carrigan Paul 1 Episode (2002)
Richard Cansino Dr. Rose 1 Episode (2002)
Liliana Mumy Samantha Tanner 1 Episode (2002)
Takayo Fischer Mrs. Cheng 1 Episode (2005)
Adrian Wenner Philip Chambers 1 Episode (2002)
Amanda Thorp Brianna Tarasi 1 Episode (2009)
Amelinda Embry Jennifer 1 Episode (2001)
Amelinda Smith Jennifer 1 Episode (2001)
Amy Rilling Nurse Amy 1 Episode (2005)
Andrew Herman Mr. Roman 1 Episode (2004)
April Pressel Denise Bober 1 Episode (2002)
Art Frankel Mr. Foster 1 Episode (2010)
Barry Kivel Mr. Hilliard 1 Episode (2003)
Blair Williamson Craig 1 Episode (2009)
Bob McClurg Fahrer 1 Episode (2002)
Bonita Friedericy Krankenschwester 1 Episode (2002)
Brian McGovern Dr. Di Stefano 1 Episode (2002)
Brian Powell Mr. Hogan 1 Episode (2002)
Brogan Roche Dr. Lemmon 1 Episode (2004)
Bruce Sledge Dana 1 Episode (2002)
Carol Herman Mrs. Carter 1 Episode (2004)
Carrie Stroup Hot Mrs. Cantwell 1 Episode (2003)
Cathleen Kaelyn Mrs. Halford 1 Episode (2009)
Cathy Herd Mrs. Wheeler 1 Episode (2001)
Cheryl White Miss Himsel 1 Episode (2004)
Cooper Thornton Tommy Tanner 1 Episode (2002)
Corena Chase Robyn 1 Episode (2009)
Damara Reilly Mrs. Koppleman 1 Episode (2003)
Dan Sachoff Matthew 1 Episode (2002)
David Downs Mr. Bolger 1 Episode (2006)
David Goryl Mr. Freemont 1 Episode (2009)
Debra Azar Dr. Donna 1 Episode (2003)
Don Tiffany Mr. Marrick 1 Episode (2003)
Donald Sage MacKay Dr. Page 1 Episode (2003)
Drew Wicks Patient #1 1 Episode (2001)
Earl Schuman Patient 1 Episode (2001)
Edith Fields Mrs. Foster 1 Episode (2010)
Eric Artell Rodney 1 Episode (2009)
Eric Leviton Barmixer 1 Episode (2002)
Eric Saiet Jerry Donovan 1 Episode (2002)
Fred Ornstein Bus Driver 1 Episode (2003)
Gail Mancuso 1 Episode (2003)
Gary Kraus Seamus Meltzer (Salesman No. 2) 1 Episode (2007)
Gina Morelli Carlas Mutter 1 Episode (2001)
Hank Lindsley Irv 1 Episode (2004)
Helen Geller Mrs. Fishman 1 Episode (2009)
Henry LeBlanc Mr. McNair 1 Episode (2006)
Herman Poppe Mr. Porter 1 Episode (2004)
Ingo Neuhaus Hermann Mueller 1 Episode (2003)
Irene White Janice 1 Episode (2004)
Jace Milstead Jimmy 1 Episode (2003)
Jack Shearer Aaron Simon 1 Episode (2002)
Jack Thomas Jim Morrison 1 Episode (2002)
Jake Fritz Billy 1 Episode (2002)
James Ritz Mr. Hicks 1 Episode (2009)
Jason Baumgard Chet 1 Episode (2004)
Jason Ensler 1 Episode (2004)
Jason-Shayne Scott Mike 1 Episode (2004)
Jean St. James Mrs. Powell 1 Episode (2009)
Jeffrey Stubblefield Frank 1 Episode (2006)
Jennifer Anderson Nanny 1 Episode (2004)
Jeremy Eckman Lyle 1 Episode (2004)
Jessica Kate Meyer Stephanie 1 Episode (2004)
Jill Basey Mrs. Kellerman 1 Episode (2002)
Jody Carter Mrs. Covello 1 Episode (2004)
Joel Hurt Jones Wheeler 1 Episode (2001)
John Brady Mr. Silka 1 Episode (2004)
John E. Cheffy Benjamin 1 Episode (2003)
Jordan Feldman Scott 1 Episode (2004)
Joshua Jordan Jeff 1 Episode (2004)
Judy Jean Berns Mrs. Stonewater 1 Episode (2009)
Justin Spitzer 1 Episode (2004)
Kathryn White Mrs. Grayson 1 Episode (2003)
Keith Blaney Mr. Simms 1 Episode (2003)
Kerry Michaels Mrs. Bumbry 1 Episode (2002)
Kevin Cooney Mr. Woodbury 1 Episode (2003)
Kevin Lowe Mr. Daniels 1 Episode (2004)
Kymberly Newberry Dr. Allan 1 Episode (2002)
Larry Marko Mr. Gilmore 1 Episode (2005)
Lenore Thomas Jenny 1 Episode (2003)
Lew Dauber Mr. Vaughn 1 Episode (2009)
Lilly Goff Gaby 1 Episode (2004)
Lindsay Hollister Nell 1 Episode (2005)
Lindsey Atoddart Nurse Halston 1 Episode (2005)
Lindsey Stoddart Lauren 1 Episode (2002)
Lyla Graham Old Mother 1 Episode (2002)
Lynne MacLean Nurse Kearney 1 Episode (2002)
Madison R. Wells Karen 1 Episode (2005)
Mane R. Andrews Darryl 1 Episode (2001)
Marc D. Wilson James 1 Episode (2005)
Marcia Ann Burrs Peggy Townesend 1 Episode (2009)
Marcus Ashley Doktor 1 Episode (2002)
Marcus Folmar Mr. Tillman 1 Episode (2009)
Mark Ankeny Mr. Swick 1 Episode (2009)
Mark Chaet Dr. Greenberg 1 Episode (2001)
Mary Kate Schellhardt Carol 1 Episode (2006)
Matthew Kaminsky Mr. Milligan 1 Episode (2004)
Michael Bunin Jerry 1 Episode (2005)
Michael Hagerty Will Quinn 1 Episode (2003)
Michael Potter 1 Episode (2009)
Mike Weinberg Tyler 1 Episode (2004)
Monica Allgeier Nurse Tisdale 1 Episode (2005)
Myrna Niles Oma 1 Episode (2012)
Natalie Farrey Employee 1 Episode (2002)
Nickolaus Brown Larry 1 Episode (2004)
Patricia Gebhard Alte Frau 1 Episode (2001)
Paul Collins Dr. Benson 1 Episode (2001)
Paul Connor Patient 1 Episode (2001)
Phil Lewis Hooch 1 Episode (2009)
Phyllis Applegate Mrs. Kaye 1 Episode (2003)
Rachel Jackson Nurse 1 Episode (2006)
Richard Voigts Mr. Weinberg 1 Episode (2003)
Robbie Swift Bruce 1 Episode (2003)
Robert Beckwith Roy 1 Episode (2009)
Robert Dolan Mr. Winston 1 Episode (2002)
Robert Martin Robinson Mr. Borland 1 Episode (2006)
Robert Munns Mr. Kavanaugh 1 Episode (2001)
Sabin Rich Stanley 1 Episode (2006)
Sara Van Horn Mrs. Emmitt 1 Episode (2009)
Scott Peacock Mr. Zerbo 1 Episode (2002)
Scott Rinker Mr. Halford 1 Episode (2009)
Shannon Welles Old Woman 1 Episode (2002)
Soren Mueller Rolf Mueller 1 Episode (2003)
Stacey Hinnen Mr. Morgan 1 Episode (2006)
Stacy Barnhisel Mrs. Marrick 1 Episode (2003)
Stephanie Brown Dr. Jennifer Garti 1 Episode (2005)
Steve Susskind Mr. Groff 1 Episode (2003)
Steven Hack Dr. Bobb 1 Episode (2002)
Stuart McClean Dr. Gold 1 Episode (2005)
Suanne Spoke 1 Episode (2009)
Ted Rogers 1 Episode (2002)
Tim Haldeman Mr. Warner 1 Episode (2005)
Time Winters Jesus 1 Episode (2001)
Timmy Deters Boy 1 Episode (2002)
Timothy Starks Mann 1 Episode (2002)
Toni Ann Rossi Sandy Larkin 1 Episode (2003)
Traber Burns Mr. Russell 1 Episode (2006)
Vaughn Lowery Tracy 1 Episode (2003)
Walter Addison Ben 1 Episode (2010)
Wendy Schenker Mrs. MacCalla 1 Episode (2004)
Wes Robinson Jake 1 Episode (2006)
Yvonne Martinez Nurse Martinez 1 Episode (2006)
Michael Ausiello 1 Episode (2007)
Caroll Spinney Oscar the Grouch 1 Episode (2009)
Mary Passeri Nurse Nelly 1 Episode (2009)
Vanessa Marshall Becky 1 Episode (2001)
Tyler Poelle Boon 1 Episode (2009)
Debra Fordham 183 Episodes (2001-2017)
Bill Lawrence 178 Episodes (2001-2019)
Randall Winston 161 Episodes (2001-2019)
Janae Bakken 160 Episodes (2001-2017)
Mark Stegemann 160 Episodes (2001-2017)
Eric Weinberg 156 Episodes (2001-2019)
Mike Schwartz 156 Episodes (2001-2019)
Neil Goldman 156 Episodes (2001-2019)
Garrett Donovan 156 Episodes (2001-2019)
Tim Hobert 156 Episodes (2001-2019)
John Michel 156 Episodes (2001-2019)
Danny Rose 156 Episodes (2001-2019)
John Inwood 155 Episodes (2001-2017)
Liz Newman 156 Episodes (2001-2019)
Brett Benner 156 Episodes (2001-2019)
Rick Blue 154 Episodes (2001-2019)
Bill Lawrence 70 Episodes (2001-2019)
Michael Spiller 20 Episodes (2002-2019)
Bill Lawrence 16 Episodes (2001-2019)
Chris Koch 13 Episodes (2003-2010)
Adam Bernstein 12 Episodes (2001-2007)
Gail Mancuso 10 Episodes (2003-2009)
Ken Whittingham 10 Episodes (2002-2009)
John Putch 8 Episodes (2007-2010)
Will Mackenzie 8 Episodes (2002-2009)
Marc Buckland 8 Episodes (2001-2003)
Linda Mendoza 7 Episodes (2006-2016)
Victor Nelli Jr. 7 Episodes (2005-2007)
Craig Zisk 6 Episodes (2001-2005)
Kevin Biegel 6 Episodes (2006-2009)
Andrew Schwartz 3 Episodes (2007-2009)
Joanna Kerns 2 Episodes (2004-2006)
Brian Bradley 2 Episodes (2009-2009)
Kevin Etten 2 Episodes (2010-2010)
Corey Nickerson 2 Episodes (2009-2010)
Matthew Perry 1 Episode (2004)
Richard Davis 1 Episode (2007)
Sugarhill Gang 1 Episode (2004)
Elodie Keene 1 Episode (2001)
Jason Ensler 1 Episode (2004)
Justin Spitzer 1 Episode (2004)
Ryan Levin 1 Episode (2006)
Robert Lopez 1 Episode (2007)
Michael Alan Spiller 20 Episodes (2002-2019)
Lawrence Trilling 6 Episodes (2001-2012)
Michael McDonald 5 Episodes (2001-2010)
Aseem Batra 5 Episodes (2006-2009)
Clarence Livingston 3 Episodes (2007-2009)
Matthew Diamond 2 Episodes (2001-2002)
Henry Chan 2 Episodes (2004-2004)
Peter Lauer 2 Episodes (2001-2010)
Steven Cragg 2 Episodes (2009-2010)
Prentice Penny 2 Episodes (2010-2010)
Devin Mahoney 2 Episodes (2009-2009)
Paul Quinn 1 Episode (2002)
Jeff Melman 1 Episode (2001)
Josh Bycel 1 Episode (2009)
Rob Greenberg 1 Episode (2006)
Jeffrey Melman 1 Episode (2001)
Bonnie Sikowitz 1 Episode (2005)
Sean Russell 1 Episode (2010)
Richard Wells 1 Episode (2006)
Lon Zimmet 1 Episode (2010)
Petra Sprecher 1 Episode (2002)
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