The loss of physician autonomy, the changing shape of physicians' practices, and efforts to control the cost of health care have left American physicians increasingly dissatisfied with the U.S. health care system. A survey of 300 office and hospital-based physicians shows 59 percent favor reform of the U.S. system; only 31 percent favor retaining the current system. Doctors face increased competition for patients (the supply of physicians has increased three times faster than the population), reduced autonomy because of intervention by government and other third party payers, pressure from patients to provide unnecessary care including expensive new technology, and increased cost containment. Yet a majority of physicians believe the causes of rising health care costs are patient demand for services and the current medical malpractice system. A minority (23 percent) blame hospitals and physicians for rising costs.