This article reports the experience of patients with elevated blood pressure scheduled to be seen in a nurse-based hypertension management program in a large multispecialty group practice. The hypertension management program is a screening and follow-up program designed to improve the measurement and management of patients' blood pressure with standardized protocols. The cohort for this study of the effectiveness of the hypertension management program consisted of 200 patients with elevated blood pressure (140 referred directly for management and counseling, 60 entered through screening), At entry, only 17% of the patients had blood pressure within controlled limits (140/90 mm Hg). One year after entry in the management phase of the program, systolic pressure had decreased an average of 6.20 mm Hg (P<0.001), and 44% of patients had blood pressure within controlled limits (P<0.001). These results suggest that the use of standardized screening techniques using multiple measurements helps to ensure that patients will not be unnecessarily treated. Furthermore, patients who entered the program successfully lowered their blood pressure and maintained the reduction over time.