Managed care may affect medical treatments for non-managed-care patients if it alters local market structure or physician behavior. We investigate whether higher levels of overall managed care market share are associated with greater use of recommended therapies for fee-for-service patients with...

We investigate the effect of managed care on the health care system, focusing on the effects managed care could have on the number and types of health care providers and their efficiency. By influencing providers, managed care may change the structure and performance of the entire health care...

The growth of managed care has prompted numerous questions about its impact on the quality of health care. This paper reviews evidence on the impacts of managed care on quality. Most comparisons of care for patients in different plans within similar markets suggests that there is little...