Amazon, Berkshire, JPMorgan Link Up to Form New Health-Care Company

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The group announced the news in the very early stages because it plans to hire a CEO and start partnering with other organizations, according to a person familiar with the matter. The effort would be focused internally first, and the companies would bring their data and bargaining power to bear on lowering health-care costs, the person said. Potential ways to bring down costs include providing more transparency over the prices for doctor visits and lab tests, as well as by enabling direct purchasing of some medical items, the person said.

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Health-care spending was estimated to account for about 18 percent of the U.S. economy last year, far more than in other developed nations. Despite efforts to curb costs, studies suggest that U.S. doctors and hospitals continue to provide too much health care. In a survey of physicians' perspectives published last year in the journal PLOS One, the average estimate was that 20 percent of medical care was unneeded, including about a quarter of tests, a fifth of prescriptions and more than one in 10 medical procedures.