drive more and more physicians out of the system, it's time for Congress to allow private contracting to play a … nonparticipating physicians, expand the scope of Medigap coverage to include services not covered by Medicare, and liberalize the rules … for opt-out physicians …

We study whether and how physicians respond to financial incentives, making use of detailed register data on the health …

random variation in physicians’ and patients’ financial incentives. For a diagnosis for which surgical treatment is somewhat … discretionary, fully informing patients, equivalently eliminating physicians’ financial incentives, reduces surgery rates by almost …

We study the role of physicians in driving geographic variation of US healthcare utilization. We estimate a model that … separates variation in average utilization of Medicare beneficiaries due to physicians, non-physician supply side factors, and … patient demand. The model is identified by migration of patients and physicians across areas, as well as by variation in …