Hypertension, the most commonly reported medical problem in veterans, is a major risk factor for heart disease and stroke. Lowering blood pressure decreases the risk of these adverse clinical outcomes. Widely promoted evidence-based clinical practice guidelines set target blood pressures for adequate control, yet most hypertensives, including VA patients, do not meet the targets. Guidelines also call for use of specific drugs depending on the patient's pattern of comorbid characteristics; yet, clinicians often prescribe drugs that are not guideline-concordant.