Increasing managed care activity could influence the adoption and diffusion of new medical technologies. This paper empirically examines the relationship between HMO market share and the diffusion of magnetic resonance imaging (MRI) equipment. Across markets, increases in HMO market share are...

Increases in the activity of managed care organizations are likely to have a number of implications for the structure and functioning of the US health care market. One possibility is that increases in managed care activity may have 'spillover effects,' influencing the performance of the entire...

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 discuss the effects of managed care on the structure of the health care delivery system, focusing on managed-care-induced consolidation among health care providers. We empirically investigate the relationship between HMO market share and mammography providers. We find evidence of...