Nat Pendleton
Joe Wayman, Ambulance Driver
Walter Kingsford
Dr. S.J. 'Walter' Carew, Hospital Administrator
Alma Kruger
Molly Byrd, Superintendant of Nurses
John Eldredge
Henry Adams, Amnesia Patient
Marie Blake
Sally, Hospital Switchboard Operator
Charles Waldron
Dr. 'Egghead' Squires, Messinger Inst.
George H. Reed
Conover, Gillespie's Attendant
Paul Porcasi
Antonio 'Tony', the Hospital Chef
Horace McMahon
J. Harold 'Fog Horn' Murphy
Frank Orth
Mike Ryan, Sullivan's Hospital Cafe
Margaret Seddon
Mrs. Julia Cray, Skin Alergy Patient
William Bailey
Spectator in Operating Theatre (uncredited)
Stephen Chase
Ambulance Interne (uncredited)
Donald Douglas
Mr. Grayson, Patient losing Eye Sight (uncredited)