Michael Callan
— Dr. Alec Considine
Dean Jones
— Dr. Lew Worship
Telly Savalas
— Dr. Dominic Riccio
Stefanie Powers
— Gloria Mead Worship
Barbara Eden
— Nurse Laura Rogers
Kaye Stevens
— Nurse Didi Loomis
George Segal
— Dr. Tony "Shiv" Parelli
Inger Stevens
— Nancy Terman
Gregory Morton
— Dr. Granchard
George Furth
— Dr. Phil Osterman
Greg Morris
— Dr. Pete Clarke
Lee Patrick
— Mrs. Hitchcock
Eddie Ryder
— Dr. Walters
Ellie Wood Walker
— Madeline Osterman
Michael Fox
— Dr. Arthur Hellman
Alan Reed Jr.
— Dr. Risner
Gordon K. Kee
— Intern
James Mathers
— Freddie
Rusty Lane
— Dr. Morton Gardner
Adrianne Ellis
— Nurse
Michael Vandever
— Beep
Sue Ane Langdon
— Stella
Adam Williams
— Wolanski
Dawn Wells
— Bobbie
Peter Hobbs
— Dr. Duane
Marianna Hill
— Sandy
Ken Mayer
— Detective Harper
David Winters
— Hood
Norman Cole
— Larry
Ken Drake
— Parking Lot Attendant