In an attempt to improve patient outcomes and control costs, a guide to empiric antimicrobial therapy, including a urinary tract infection (UTI) algorithm, was distributed to hospital physicians at an academic medical center. A retrospective study was conducted to assess the impact of the guide on physician prescribing of empiric antimicrobial therapy for UTIs. Prior to the implementation of the guide, 45% (n=55) of patients with UTIs were treated consistently with the algorithm. Although not statistically significant, consistency increased to 51% (n=45) after implementation of the guide. The initial publication of a guide to empiric antimicrobial therapy did not significantly influence physician prescribing patterns regarding UTIs. Educational sessions at the time of implementation along with reinforcement of the guidelines may further impact prescribing habits and influence algorithm compliance.