Physicians' cost containment incentives may create conflicts of interest. To understand how patients view these incentives, we interviewed 1,050 patients regarding a 10 percent cost control bonus and a combined cost control/quality bonus. Seventy-three percent said that the cost control bonus was a bad idea; 49 percent viewed the combined bonus more favorably than the cost control bonus; and 91 percent favored disclosure of bonuses. We conclude that patients find bonuses worrisome and favor their disclosure. A quality component reassures some, but not all, patients. Initiating a dialogue with patients about practicing medicine in an era of limited resources may help health plans and physicians to address patients' concerns.