The Secret of Dr. Kildare

Lew Ayres

James Kildare

Lionel Barrymore

Leonard Gillespie

Lionel Atwill

Paul Messenger

Helen Gilbert

Nancy Messenger

Nat Pendleton

Wayman

Laraine Day

Mary Lamont

Sara Haden

Nora

Samuel S. Hinds

Stephen Kildare

Emma Dunn

Martha Kildare

Walter Kingsford

SJ Carew

Grant Mitchell

John Archley

Alma Kruger

Molly Byrd

Robert Kent

Charles Herron

Marie Blake

Sally

Martha O'Driscoll

Mrs. Roberts

Nell Craig

Nosey

George H. Reed

Conover

Frank Orth

Mike

Walter Baldwin

Finch (uncredited)

Don 'Red' Barry

Collins (uncredited)

George Chandler

Pay Orderly (uncredited)

Tom Collins

Dr. Joiner (uncredited)

Alec Craig

Telephone Repair Man (uncredited)

Byron Foulger

Hospital Attendant (uncredited)

Mitchell Lewis

Adam (uncredited)

Matt McHugh

Messenger's Chauffeur (uncredited)

Emory Parnell

Policeman (uncredited)

William Tannen

Bates (uncredited)

Joe Yule

Lunch Room Counterman (uncredited)

Harold S. Bucquet

Director

Harry Ruskin

Screenplay

Willis Goldbeck

Screenplay

Max Brand

Story

Alfred Gilks

Director of Photography

David Snell

Music

Edwin B. Willis

Set Decoration

Randall Duell

Assistant Art Director

Frank E. Hull

Editor

Cedric Gibbons

Art Direction

Douglas Shearer

Recording Supervision

Dolly Tree

Wardrobe Designer