Heading into 2018, insurers also are nervous about the future of billions of dollars in cost-sharing assistance for some exchange customers with modest incomes. That means the insurer doesn't have to build doctor networks for its exchange business from scratch. Neidorff said Tuesday that 80 percent of Centene's 2016 exchange customers renewed their plans in 2017. Centene has added some new exchange business through its acquisition of fellow insurer Health Net, said Stifel health insurance analyst Thomas Carroll. St. Louis-based Centene Corp. didn't detail financial results from its exchange business.

Source: ABC News April 25, 2017 18:10 UTC