A Doctor's Diary is told through the eyes of Dr. Dan Norris (John Trent), resident physician in a private hospital. In his search for a cure for spinal meningitis, Norris recklessly runs roughshod over the feelings of his colleagues. The doctor's older, wiser supervisor, Dr. Clem Driscoll (George Bancroft), tries to curb Norris' impatience, pointing out that nothing takes place overnight. Angrily, Norris accuses Driscoll of malpractice and is forced to resign from the clinic -- just when a meningitis epidemic breaks out.
George Bancroft
as Dr. Clem Driscoll
Helen Burgess
as Ruth Hanlon
John Trent
as Dr. Dan Norris
Ruth Coleman
as Catherine Stanwood
Ronald Sinclair
as Michael Fielding (as Ra Hould)
Molly Lamont
as Mrs. Fielding
Sidney Blackmer
as Dr. Anson Ludlow
Charles Waldron
as Dr. Ellery Stanwood (as Charles D. Waldron)
Frank Puglia
as Louie
Milburn Stone
as Fred Clark
Sue Carol
as Mrs. Mason
Mickey Kuhn
as Boy in Hospital (uncredited)
