Michael Callan

Character: Dr. Alec Considine

Dean Jones

Character: Dr. Lew Worship

Telly Savalas

Character: Dr. Dominic Riccio

Stefanie Powers

Character: Gloria Mead Worship

Barbara Eden

Character: Nurse Laura Rogers

Kaye Stevens

Character: Nurse Didi Loomis

George Segal

Character: Dr. Tony "Shiv" Parelli

Inger Stevens

Character: Nancy Terman

Gregory Morton

Character: Dr. Granchard

George Furth

Character: Dr. Phil Osterman

Greg Morris

Character: Dr. Pete Clarke

Lee Patrick

Character: Mrs. Hitchcock

Eddie Ryder

Character: Dr. Walters

Ellie Wood Walker

Character: Madeline Osterman

Michael Fox

Character: Dr. Arthur Hellman

Alan Reed Jr.

Character: Dr. Risner

Gordon K. Kee

Character: Intern

James Mathers

Character: Freddie

Rusty Lane

Character: Dr. Morton Gardner

Adrianne Ellis

Character: Nurse

Michael Vandever

Character: Beep

Sue Ane Langdon

Character: Stella

Adam Williams

Character: Wolanski

Dawn Wells

Character: Bobbie

Peter Hobbs

Character: Dr. Duane

Marianna Hill

Character: Sandy

Ken Mayer

Character: Detective Harper

David Winters

Character: Hood

Norman Cole

Character: Larry

Ken Drake

Character: Parking Lot Attendant

Charles Lane

Character: Connors

Dee Carroll

Character: Nurse Arlene Shaw (uncredited)

Bob Crane

Character: Drunken Prankster at Baby Shower (uncredited)

Linda Lee

Character: Student Nurse (uncredited)

Dal Jenkins

Character: Como