Zach Braff
John 'J.D.' Dorian (24 eps)
Donald Faison
Christopher Turk (24 eps)
John C. McGinley
Perry Cox (24 eps)
Sarah Chalke
Elliot Reid (24 eps)
Judy Reyes
Carla Espinosa (24 eps)
Ken Jenkins
Bob Kelso (24 eps)
Neil Flynn
Janitor (24 eps)
Johnny Kastl
Doug Murphy (7 eps)
Charles Rahi Chun
Dr. Wen (7 eps)
Christa Miller
Jordan Sullivan (6 eps)
Elizabeth Bogush
Alex (3 eps)
P.D. Mani
Dr. Simotas (3 eps)
Lynne Maclean
Nurse Kearney (3 eps)
Matt Winston
Jeffrey Steadman (3 eps)
Scott Foley
Sean Kelly (2 eps)
Jimmie Walker
Jimmie Walker (2 eps)
Brendan Fraser
Ben Sullivan (2 eps)
Kelli Williams
Kristen Murphy (2 eps)
Lela Lee
Bonnie (2 eps)
Derek Miller
Orderly (2 eps)
Masi Oka
Franklyn (2 eps)
Cody Estes
Young J.D. (2 eps)
Nicole Sullivan
Jill Tracy (2 eps)
Michael McDonald
Mike Davis (2 eps)
Cayden Boyd
Hummer (1 eps)
Hattie Winston
Margaret Turk (1 eps)
Ed Begley Jr.
Dr. Bailey (1 eps)
Vanessa Marshall
Becky (1 eps)
Al Harrington
Older Patient (1 eps)
Marshall Manesh
Pizza Guy (1 eps)
Louie Anderson
Louie Anderson (1 eps)
DJ Qualls
Josh (1 eps)
Paige Peterson
Shelly (1 eps)
John Ducey
Will Forte (1 eps)
Time Winters
Jesus (1 eps)
William Daniels
Dr. Douglas (1 eps)
Travis Wester
David Morrison (1 eps)
Paul Connor
Patient (1 eps)
Paul Collins
Dr. Benson (1 eps)
John Ritter
Sam Dorian (1 eps)
Michael Hobert
Pizza Guy (1 eps)
Markie Post
Lily Reid (1 eps)
Sean Hayes
Nick (1 eps)
Steve Tom
Narrator / Doctor (1 eps)
Liliana Mumy
Samantha Tanner (1 eps)
Stephen Furst
Dr. Franklyn (1 eps)
R. Lee Ermey
Janitor's Father (1 eps)
Eric Laneuville
Dr. Lamar (1 eps)
Lane Davies
Simon Reid (1 eps)
Jake Fritz
Billy (1 eps)
Mary Gillis
Mrs Pratt (1 eps)
Timmy Deters
Boy (1 eps)
Rob Richards
Jared (1 eps)
Shannon Welles
Old Woman (1 eps)
Randi Kaplan
Patient (1 eps)
Jack Walsh
Unconscious Patient (1 eps)
Max Kerstein
Mr. Bidwell (1 eps)
Robert Munns
Mr. Kavanaugh (1 eps)
Alpheus Merchant
Sleeping Patient (1 eps)
David Martel
Guy (1 eps)
Esther Mercado
Mrs. Guerrero (1 eps)
Jennifer Naimo
Gina Tanner (1 eps)
Jack Thomas
Jim Morrison (1 eps)
Cooper Thornton
Tommy Tanner (1 eps)
Marlena Poles
Mrs. Blitt (1 eps)
Ray Spinka
Kindly Old Man (1 eps)
Troy Bishop
College Dude (1 eps)
Gabrielle Allan
Woman (1 eps)
John O'Brien
Man (1 eps)
Mark Chaet
Dr. Greenberg (1 eps)
Gina Morelli
Carla's Mom (1 eps)
Earl Schuman
Patient (1 eps)
Mane Andrew
Darryl (1 eps)
Andy Forrest
Teacher (1 eps)
John Valdetero
Bartender (1 eps)
T.J. Hall
Young Turk (1 eps)
Bronwen Booth
Anchorwoman (1 eps)
Amelinda Embry
Jennifer (1 eps)
Drew Wicks
Patient (1 eps)
Granger Green
Meredith (1 eps)
Cathy Herd
Mrs. Wheeler (1 eps)
Joel Hurt Jones
Mr. Wheeler (1 eps)
Ted Pitsis
Al (1 eps)
Carrot Top
Carrot Top (1 eps)
Sean Carrigan
Paul (1 eps)
Jim Coari
Mr. Yeager (1 eps)
Jim Blanchette
Allan (1 eps)
Brian Catalano
Yuppie (1 eps)
Myrna Niles
Grandmother (1 eps)
Dan Sachoff
Matthew (1 eps)
Timothy Starks
Man (1 eps)
Leah Rowan
Woman (1 eps)
Adrian Wenner
Philip Chambers (1 eps)
Don Chastain
Mr. Chambers (1 eps)
Rich Piana
Monster (1 eps)
Bud Sabatino
Patient (1 eps)
Steven Shaw
Mr. Sloane (1 eps)
Eric Saiet
Jerry Donovan (1 eps)
Colin Martin
Patient (1 eps)
Alexandra Lee
Young Elliot (1 eps)
David S. Robinson Hicks
Young Turk (1 eps)
Helen Siff
Patient (1 eps)
Charles C. Stevenson Jr.
Patient (1 eps)
Richard Alexander Wells
Patient (1 eps)
Robert Dolan
Mr. Winston (1 eps)
Steven Hack
Dr. Bobb (1 eps)
Mary MacDonald
Admit Nurse (1 eps)
Kymberly Newberry
Dr. Allan (1 eps)
Katya Abelski
Child (1 eps)
April Pressel
Denise Bober (1 eps)
Michael Cotter
Intern (1 eps)
Angee Hughes
Nurse (1 eps)
Don Perry
Mr. Bober (1 eps)
Jack Shearer
Aaron Simon (1 eps)
Ted Rogers
Mr. Burski (1 eps)
Fred Stoller
Mr. Hoffner (1 eps)
Manley Henry
Snoop Dogg Intern (1 eps)
Bob Clendenin
Dr. Zeltzer (1 eps)
Kathryn Joosten
Mrs. Tanner (1 eps)
Katie O'Rourke
Coffee Nurse (1 eps)
George Miserlis
Crispin (1 eps)
Philip McNiven
Roy (1 eps)