 Lew AyresDr. James Kildare | Dr. James Kildare |
 Lionel BarrymoreDr. Leonard Gillespie | Dr. Leonard Gillespie |
 Laraine DayNurse Mary Lamont | Nurse Mary Lamont |
 Samuel S. HindsDr. Stephen Kildare | Dr. Stephen Kildare |
 Gene LockhartGeorge Winslow | George Winslow |
 John SheltonDr. Davidson | Dr. Davidson |
 Nat PendletonJoe Wayman | Joe Wayman |
 Emma DunnMrs. Martha Kildare | Mrs. Martha Kildare |
 Alma KrugerMolly Byrd | Molly Byrd |
 Walter KingsfordDr. Walter Carew | Dr. Walter Carew |
 Nell CraigNurse Parker | Nurse Parker |
| CCliff DanielsonDr. Jordan | Dr. Jordan |
 Henry WadsworthCollins | Collins |
 Tom CollinsJoiner | Joiner |
 George H. ReedConover | Conover |
 Donald BriggsMr. Brownlee | Mr. Brownlee |
 Leona MaricleMrs. Brownlee | Mrs. Brownlee |
 Archie TwitchellBates | Bates |
 Marie BlakeSally | Sally |
 Charles TrowbridgeAtkinson | Atkinson |
 Arthur O'ConnellIntern (uncredited) | Intern (uncredited) |
 Eddie AcuffClifford Genet - an Orderly (uncredited) | Clifford Genet - an Orderly (uncredited) |
 Erville AldersonBoylston - City Council Member (uncredited) | Boylston - City Council Member (uncredited) |
 Arthur AylesworthMr. Cobb - a Farmer (uncredited) | Mr. Cobb - a Farmer (uncredited) |
 Barbara BedfordCarew's Secretary (uncredited) | Carew's Secretary (uncredited) |
| JJack CarrDr. Marsh (uncredited) | Dr. Marsh (uncredited) |
| MMary CecilMrs. Deering (uncredited) | Mrs. Deering (uncredited) |
 George ChandlerParkersville Counterman (uncredited) | Parkersville Counterman (uncredited) |
| KKen ChristyDickson - City Council Member (uncredited) | Dickson - City Council Member (uncredited) |
 Jane DrummondNurse Probationer (uncredited) | Nurse Probationer (uncredited) |
