Dr. James Kildare

Dr. Leonard Gillespie

Nurse Mary Lamont

Dr. Gregory 'Greg' Lane

Dr. Stephen Kildare

Mrs. Martha Kildare

Joe Wayman, Ambulance Driver

Dr. S.J. 'Walter' Carew, Hospital Administrator

Molly Byrd, Superintendant of Nurses

Henry Adams, Amnesia Patient

Nurse 'Nosey' Parker

Sally, Hospital Switchboard Operator

Dr. 'Egghead' Squires, Messinger Inst.

Rufus Ingersoll

Dr. Joiner

Conover, Gillespie's Attendant

Antonio 'Tony', the Hospital Chef

J. Harold 'Fog Horn' Murphy

Mike Ryan, Sullivan's Hospital Cafe

Mrs. Julia Cray, Skin Alergy Patient

Mrs. Henry Adams

Spectator in Operating Theatre (uncredited)

Ambulance Interne (uncredited)

Mr. Grayson, Patient losing Eye Sight (uncredited)