To determine the impact of an electronic decision support tool on physician decision making and patient outcomes for the treatment of poorly controlled diabetes mellitus. Primary endpoint will measure change in hemoglobin A1c. Secondary endpoints will examine cost of therapy and patient satisfaction with therapy. Study hypothesis is that use of the PATH decision tool will produce greater reduction overall in measurements of hemoglobin A1c in patients who participate and follow the PATH decision tool than patients who elect not to follow the PATH decision tool. PATH decision tool will provide more cost effective solutions for management of diabetic medication than current methods.