George C. Scott

Dr. Herbert Bock

Diana Rigg

Barbara Drummond

Barnard Hughes

Drummond

Richard Dysart

Dr. Welbeck

Stephen Elliott

Dr. Sundstrom

Donald Harron

Milton Mead

Andrew Duncan

William Mead

Nancy Marchand

Mrs. Christie

Jordan Charney

Hitchcock

Roberts Blossom

Guernsey

Lenny Baker

Dr. Schaefer

Richard Hamilton

Dr. Ronald Casey

Kate Harrington

Nurse Dunne

Katherine Helmond

Marilyn Mead

Frances Sternhagen

Mrs. Cushing

Robert Walden

Dr. Brubaker

Bette Henritze

Operating Room Nurse

Paddy Chayefsky

Opening Narrator (voice) (uncredited)

Jacqueline Brookes

Dr. Immelman (uncredited)

Stockard Channing

E.R. Nurse (uncredited)

Alex Colon

Young Lord (uncredited)

Matthew Cowles

Intern Chandler (uncredited)

Reid Cruickshanks

Chief Engineer (uncredited)

Anita Dangler

Paranoid Lady (uncredited)

Dennis Dugan

E.R. Doctor (uncredited)

Julie Garfield

Nurse Perez (uncredited)

Sarina C. Grant

Nurse X (uncredited)

Christopher Guest

Resident (uncredited)

Tresa Hughes

Mrs. Donovan (uncredited)

Paul Mace

Intern Ambler (uncredited)

Shawn McAllister

Medical Intern (uncredited)

Janet Sarno

Nurse Rivers (uncredited)

Sab Shimono

Operating Room Staff Member (uncredited)

Marilyn Sokol

Lady Lib. (uncredited)

Tom Spratley

Mitgang (uncredited)

Tracey Walter

Man in Crowd (uncredited)