Amazon Makes $1 Billion Splash in Health Care, Buying PillPack

(Bloomberg) — Amazon.com Inc. is buying its way into the heart of the U.S. health-care system, instantly shaking up a prescription-drug industry already in the midst of a broader transformation.
Insurance companies and drug-benefit managers have struck a series of deals in recent months designed in part to thwart a potential big splash in the health world from Amazon. But the online retail giant’s decision to buy online pharmacy PillPack rapidly accelerates the threat posed to entren