Zach Braff
John 'J.D.' Dorian (13 eps)
Donald Faison
Christopher Turk (13 eps)
John C. McGinley
Perry Cox (13 eps)
Eliza Coupe
Denise Mahoney (13 eps)
Kerry Bishé
Lucy Bennett (13 eps)
Michael Mosley
Drew Suffin (13 eps)
Dave Franco
Cole Aaronson (13 eps)
Nicky Whelan
Maya (10 eps)
Robert Maschio
Todd (9 eps)
Ken Jenkins
Dr. Kelso (8 eps)
Matthew Moy
Trang (7 eps)
Windell Middlebrooks
Capt. Duncook (5 eps)
Sarah Chalke
Elliot Reid (4 eps)
Gary Ballard
Mr. Biegel (2 eps)
Antonio Sabàto, Jr.
Antonio Sabàto Jr. (2 eps)
Tony Tambi
Joseph (2 eps)
Walter Addison
Ben (2 eps)
Neil Flynn
Janitor (1 eps)
Sam Lloyd
Ted Buckland (1 eps)
Nadine Velazquez
Nicole (1 eps)
Edith Fields
Mrs. Foster (1 eps)
Paul Dooley
Paul (1 eps)
Reno Wilson
Russell Vaughn (1 eps)
John Billingsley
Alan (1 eps)
Kurt Doss
Ryan Duncan (1 eps)
Jane Le
Ming (1 eps)
Larry Sullivan
Eric Coleman (1 eps)
Geoff Stevenson
Dr. Beardface (1 eps)
David Kobzantsev
Michael (1 eps)
Steven Cragg
Lt. Underhill (1 eps)
Cecelia Antoinette
Mrs. Duncan (1 eps)
Audrey Kearns
Meghan Maroney (1 eps)
Kate Micucci
Stephanie Gooch (1 eps)
Jim Hazelton
David Izzle (1 eps)
Sonal Shah
Sunny Day (1 eps)
Jeremiah Hu
Student (1 eps)
Betty A. Bridges
Ms. Simmons (1 eps)
David Cade
Boots (1 eps)
John Lanz
Eric Puritsky (1 eps)
Elliot Schwartz
Roger (1 eps)
Dan Sachoff
Professor (1 eps)
Tom Ormeny
Arthur (1 eps)
Logan Fields
Kid (1 eps)
Art Frankel
Mr. Foster (1 eps)
Tracy McCubbin
Nurse Sheila (1 eps)
Ginna Rutter
75-Year Old Lucy (1 eps)
Judy Kain
Irene Kelly (1 eps)
Matthew Cardarople
Frank (1 eps)
Christa Miller
Jordan Sullivan (1 eps)
Ryan Biegel
Clint (1 eps)