Characters played by Lew Ayres
Dr. James Kildare
Characters played by Lionel Barrymore
Dr. Leonard Gillespie
Characters played by Laraine Day
Mary Lamont
Characters played by Samuel S. Hinds
Dr. Stephen Kildare
Characters played by Gene Lockhart
George Winslow
Characters played by John Shelton
Dr. Davidson
Characters played by Nat Pendleton
Wayman
Characters played by Emma Dunn
Mrs. Martha Kildare
Characters played by Alma Kruger
Molly Byrd
Characters played by Walter Kingsford
Dr. Walter Carew
Characters played by Nell Craig
Nurse Parker
Characters played by Cliff Danielson
Dr. Jordan
Characters played by Henry Wadsworth
Collins
Characters played by Tom Collins
Joiner
Characters played by George Reed
Conover
Characters played by Donald Briggs
Mr. Brownlee
Characters played by Leona Maricle
Mrs. Brownlee
Characters played by Archie Twitchell
Bates
Characters played by Marie Blake
Sally
Characters played by Charles Trowbridge
Atkinson
Characters played by Eddie Acuff
Clifford Genet -- Orderly
Characters played by Erville Alderson
Boylston - City Council Member
Characters played by Arthur Aylesworth
Mr. Cobb - a Farmer
Characters played by Barbara Bedford
Carew's Secretary
Characters played by Jack Carr
Dr. Marsh
Characters played by Mary Cecil
Mrs. Deering
Characters played by George Chandler
Parkersville Counterman
Characters played by Ken Christy
Dickson - City Council Member
Characters played by Jane Drummond
Nurse Probationer
Characters played by Ralph Dunn
Motorcycle Cop
Characters played by Bob Ingersoll
Carpenter Adding Sign on Door
Characters played by Claire McDowell
Nurse for Mr. Winslow
Characters played by Horace McMahon
Foghorn Murphy
Characters played by Arthur O'Connell
New Interne
Characters played by Frank Orth
Mike Ryan
Characters played by Milton Parsons
Parkersville Crazy Man
Characters played by Ruth Robinson
Mother of Baby
Characters played by Ferris Taylor
Dr. Coldridge
Characters played by Kay Vallon
Nurse Shaw