The biggest names in health insurance like UnitedHealth Group (UNH), Humana (HUM), Cigna (CI), Wellpoint (WLP) and Aetna (AET) and Blue Cross and Blue Shield plans across the country are contracting with ACOs.

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Already, private insurance companies like UnitedHealth Group (UNH), Humana (HUM), Aetna (AET) and most Blue Cross and Blue Shield plans are making bundled payments to groups of doctors and hospitals.

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He previously served as Medicare Part B director for Aetna, administering Medicare plans in nine states, and was with Blue Cross and Blue Shield before that.

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