Lew Ayres
Dr. James Kildare
Lionel Barrymore
Dr. Leonard Gillespie
Laraine Day
Nurse Mary Lamont
Shepperd Strudwick
Dr. Gregory 'Greg' Lane
Samuel S. Hinds
Dr. Stephen Kildare
Emma Dunn
Mrs. Martha Kildare
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
Nell Craig
Nurse 'Nosey' Parker
Marie Blake
Sally, Hospital Switchboard Operator
Charles Waldron
Dr. 'Egghead' Squires, Messinger Inst.
George Lessey
Rufus Ingersoll
Tom Collins
Dr. Joiner
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
Fay Helm
Mrs. Henry Adams
William Bailey
Spectator in Operating Theatre (uncredited)
Stephen Chase
Ambulance Interne (uncredited)
Donald Douglas
Mr. Grayson, Patient losing Eye Sight (uncredited)
Harold S. Bucquet
Dr. Kildare's Strange Case
Released
Bande-annonce
