Delaware's Attorney General Matt Denn will join the U.S. Department of Justice and eight other attorneys general in opposing the merger of health insurance companies Aetna and Humana — the third and fifth largest health insurance companies in the country — arguing that the combination would reduce competition in Delaware and drive up prices.

Delaware’s Attorney General Matt Denn will join the U.S. Department of Justice and eight other attorneys general in opposing the merger of health insurance companies Aetna and Humana — the third and fifth largest health insurance companies in the country — arguing that the combination would reduce competition in Delaware and drive up prices.

Aetna and Humana sell Medicare Advantage plans in New Castle and Kent counties, which are offered as an alternative to traditional Medicare and a merger would result in high market share by the combined entity in those two counties.

“This proposed merger would very significantly reduce competition for health insurance through Medicare Advantage plans in the counties that contain three-quarters of our state’s population,” Denn said. “At a time when health care costs are already a concern, this would move Delaware in the wrong direction.”

The challenge is based on reduced competition between Aetna and Humana nationally in offering health coverage on state health care exchanges. However, Humana does not currently participate in the exchange in Delaware. USDOJ and a number of states also filed a challenge to the proposed merger of health insurance companies Anthem and Cigna. Anthem does not operate in Delaware.

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