Portrait of Gerard O'Brien

Gerard O'Brien

Born: Unknown birthdate.
Gerard O'Brien is ?
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Ages in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages
Poster of Third Watch
Third Watch
Gerard O'Brien was ? in Third Watch as 'Sloan'.
TV Show Released: First Air Date
Thu, Sep 23 1999
Poster of Law & Order: Special Victims Unit
Law & Order: Special Victims Unit
Gerard O'Brien was ? in Law & Order: Special Victims Unit as 'ER Doctor'.
TV Show Released: First Air Date
Mon, Sep 20 1999
Poster of Spin City
Spin City
Gerard O'Brien was ? in Spin City as 'Cop'.
TV Show Released: First Air Date
Tue, Sep 17 1996
Poster of Law & Order
Law & Order
Gerard O'Brien was ? in Law & Order as 'Doorman'.
TV Show Released: First Air Date
Thu, Sep 13 1990