Lionel Barrymore
Role: Dr. Leonard Gillespie
Lew Ayres
Role: Dr. James Kildare
Lynne Carver
Role: Alice Raymond
Nat Pendleton
Role: Joe Wayman
Jo Ann Sayers
Role: Barbara Chanler
Samuel S. Hinds
Role: Dr. Stephen Kildare
Emma Dunn
Role: Mrs. Martha Kildare
Walter Kingsford
Role: Dr. P. Walter Carew
Truman Bradley
Role: Jack Hamilton
Monty Woolley
Role: Dr. Lane-Porteus
Pierre Watkin
Role: Mr. Robert Chanler
Nella Walker
Role: Mrs. Chanler
Murray Alper
Role: Blue Swan Waiter (uncredited)
Don 'Red' Barry
Role: Dr. Collins (uncredited)
Granville Bates
Role: Harry Cook (uncredited)
Barbara Bedford
Role: Nurse (uncredited)
Margaret Bert
Role: Little Boy's Mother (uncredited)
Marie Blake
Role: Miss Sally Green (uncredited)
Virginia Brissac
Role: Boardinghouse Landlady (uncredited)
John Butler
Role: Coronary Patient (uncredited)
Don Castle
Role: Dr. Bates (uncredited)
Janice Chambers
Role: Maggie (uncredited)
Roger Converse
Role: Dr. Joiner (uncredited)
Nell Craig
Role: Nurse Parker (uncredited)
Frank Dae
Role: President, Board of Directors (uncredited)
Bess Flowers
Role: Nurse (uncredited)
Brenda Fowler
Role: Head Nurse (uncredited)
Harrison Greene
Role: Bartender (uncredited)
Howard Hickman
Role: Dr. Harris (uncredited)
Cy Kendall
Role: Charlie (uncredited)
Mary MacLaren
Role: Lodger Bringing Blanket (uncredited)
James Pier Mason
Role: Lodger Going for Ambulance (uncredited)
Tom McGuire
Role: Clancy (uncredited)
Jack Murphy
Role: Intern (uncredited)
Frank Orth
Role: Mike Ryan (uncredited)
Leonard Penn
Role: Albert Foster (uncredited)
Cyril Ring
Role: Intern (uncredited)
Clinton Rosemond
Role: Conover (uncredited)
Gilbert Russell
Role: Intern (uncredited)
Edwin Stanley
Role: Resident Doctor (uncredited)
Phillip Terry
Role: Dr. Vickery (uncredited)
Emmett Vogan
Role: Detective Herman (uncredited)
Bobs Watson
Role: Little Boy (uncredited)
Jack Woody
Role: Ed (uncredited)
William Worthington
Role: Board Member (uncredited)
