Objectives The overriding goal of this implementation project is to translate research findings about management of hypertension into practice and thereby to improve patient outcome, i.e., adequacy of control of BP, in patients with hypertension. Specific objectives are to develop and implement a model of group medical visits in iterative steps; to evaluate whether group medical visits improve patient adherence to prescribed antihypertensive medications and improve BP control; and to assess patient, physician, and health care system factors involved in successfully making organizational changes to encompass group medical visits.