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)