The Secret of Dr. Kildare

Dr. James Kildare

Dr. Leonard Gillespie

Paul Messenger

Nancy Messenger

Joe Wayman

Nurse Mary Lamont

Nora

Dr. Stephen Kildare

Mrs. Martha Kildare

Dr. S.J. Carew

John Xerxes Archley

Head Nurse Molly Byrd

Charles Herron

Sally - Telephone Operator

Mrs. Roberts

Nurse 'Nosey' Parker

Conover

Mike Sullivan

Finch (uncredited)

Collins - Intern (uncredited)

Pay Orderly (uncredited)

Dr. Joiner (uncredited)

Telephone Repair Man (uncredited)

Hospital Attendant (uncredited)