Zach Braff
John 'J.D.' Dorian (22 eps)
Donald Faison
Christopher Turk (22 eps)
John C. McGinley
Perry Cox (22 eps)
Sarah Chalke
Elliot Reid (22 eps)
Judy Reyes
Carla Espinosa (22 eps)
Ken Jenkins
Bob Kelso (22 eps)
Neil Flynn
Janitor (22 eps)
Christa Miller
Jordan Sullivan (11 eps)
Johnny Kastl
Doug Murphy (6 eps)
Charles Rahi Chun
Dr. Wen (5 eps)
Ricky Schroder
Paul (4 eps)
Julie Hudson
Dr. Gerson (3 eps)
Lindsey Stoddart
Lauren (3 eps)
Donald Sage Mackay
Doctor (3 eps)
Amy Smart
Jamie Moyer (3 eps)
George Miserlis
Crispin (3 eps)
Paul F. Perry
Randall (3 eps)
Heather Locklear
Julie Keaton (2 eps)
Sarah Lancaster
Lisa (2 eps)
Paige Peterson
Shelly (2 eps)
Masi Oka
Franklyn (2 eps)
Larry Udy
Mr. Grimmett (2 eps)
Joey Saravia
Ralphie (2 eps)
Cody Estes
Young J.D. (2 eps)
Bob Clendenin
Dr. Zeltzer (2 eps)
Joe Rose
Troy (2 eps)
Philip McNiven
Roy (2 eps)
Steve Susskind
Mr. Groff (1 eps)
Leslie David Baker
Surgery Patient (1 eps)
Fred Berry
Fred Berry (1 eps)
Biff Yeager
Dr. Walch (1 eps)
Richard Kind
Mr. Corman (1 eps)
Jay Leno
Jay Leno (1 eps)
Ted Lange
Mr. Blair (1 eps)
Dick Van Dyke
Dr. Townshend (1 eps)
Maree Cheatham
Mrs. Warner (1 eps)
Kevin Cooney
Mr. Woodbury (1 eps)
Sam Jaeger
Steve Larkin (1 eps)
Colin Hay
Troubador (1 eps)
Richard Cansino
Dr. Rose (1 eps)
Ryan Reynolds
Spence (1 eps)
Jay Mohr
Dr. Peter Fisher (1 eps)
David Copperfield
David Copperfield (1 eps)
D.L. Hughley
Kevin Turk (1 eps)
Eric Bogosian
Dr. Gross (1 eps)
Alan Ruck
Mr. Bragin (1 eps)
Gillian Vigman
Female Patient (1 eps)
Lane Davies
Simon Reid (1 eps)
Natalie Farrey
Employee (1 eps)
Susan Grace
Woman (1 eps)
Lyla Graham
Old Mother (1 eps)
Kelly McCracken
Patient (1 eps)
Scott Peacock
Mr. Zerbo (1 eps)
Bob McClurg
Car Driver (1 eps)
Bonita Friedericy
Nurse (1 eps)
Amy Tolsky
Nurse (1 eps)
Marcus Ashley
ER Doctor (1 eps)
Jill Basey
Mrs. Kellerman (1 eps)
Douglas Sutherland
Guy With Perm (1 eps)
Lela Lee
Bonnie (1 eps)
Brian Powell
Mr. Hogan (1 eps)
Jeffrey Asch
Dr. Amato (1 eps)
Brian McGovern
Dr. DiStefano (1 eps)
Bruce Sledge
Dana Gould (1 eps)
Kerry Michaels
Mrs. Bumbry (1 eps)
Linda Tran
Noelle (1 eps)
Britt Erickson
Beautiful Woman (1 eps)
Derek Miller
Orderly (1 eps)
Rochelle Robinson
Woman (1 eps)
Cole Williams
Mike (1 eps)
Keilana Smith
Clinic Director (1 eps)
Theresa Barrera
Gyno Girl (1 eps)
Deonte Gordon
Mark the Orderly (1 eps)
Richard Livingston
Dad (1 eps)
Marcy Goldman
Mrs. Watson (1 eps)
Damara Reilly
Mrs. Koppleman (1 eps)
Brogan Roche
Choir Leader (1 eps)
Stacy Barnhisel
Mrs. Marrick (1 eps)
Garrett Donovan
Baby Marrick (1 eps)
Don Tiffany
Mr. Marrick (1 eps)
Jessica Wright
Young Woman (1 eps)
Trevor Wright
Kid (1 eps)
Toni Ann Rossi
Sandy Larkin (1 eps)
Robert Beckwith
Roy (1 eps)
Lenore Thomas
Jenny (1 eps)
Bergen Williams
Carol Stonewater (1 eps)
Ron Ostrow
Mr. Foster (1 eps)
Keith Blaney
Mr. Simms (1 eps)
Barry Kivel
Mr. Hilliard (1 eps)
Kathryn White
Mrs. Grayson (1 eps)
D. Elliot Woods
Security Guard (1 eps)
Adam Harrington
Jack Moyer (1 eps)
Jonathan Conrad
Justin (1 eps)
Melanie Rockwell
Ms. Brady (1 eps)
Danny Swerdlow
Rudy (1 eps)
Angee Hughes
Nurse (1 eps)
Larkin Campbell
Maintenance Man (1 eps)
Tim Benedick
Surgeon (1 eps)
J.K. Baker
Maintenance Man (1 eps)
Soren Hellerup
Rolf Mueller (1 eps)
Ingo Neuhaus
Hermann Mueller (1 eps)
Robert Noble
Chaplain (1 eps)
Gabriel Pimentel
Mike (1 eps)
Verne Troyer
Small Man at Bar (1 eps)
Richard Voigts
Mr. Weinberg (1 eps)
James Henriksen
Husband (1 eps)
Sarah Lilly
Wife (1 eps)
Jason Baumgard
Chet (1 eps)
Mike Schwartz
Patient (1 eps)
Debra Azar
Dr. Donna (1 eps)
Tom Cavanagh
Dan Dorian (1 eps)
Michael McDonald
Mike Davis (1 eps)
Jill Tracy
Elaine (1 eps)
Daniel Edward Mora
Father (1 eps)
Monica Allison
Attractive Woman (1 eps)