Purchasers and the impact of managed care on physicians.

In much the same way that demands by managed care organizations are shaping the way physicians practice, health care purchasers impact how managed care organizations operate. Corporations purchase managed health care through their employee benefits programs, and understanding the language, objectives, and limitations of these purchasers is essential to grasping the forces influencing managed care organizations and the modern practice of medicine. The emergence of value-based purchasing as a strategic corporate approach to health benefits programs will dictate the forces on physicians, hospitals, and managed care organizations for years to come. These forces have already led to price reductions, health plan accreditation, employee-directed report cards, outcomes management, and organized systems of care, and they will determine the broad outlines of the emerging U.S. health care system.