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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The move comes as major health insurance companies like UnitedHealth Group (UNH), Aetna (AET), Cigna (CI) and Humana (HUM) increasingly profile doctors and link physician pay to performance.

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In addition, most private health insurance companies, too, such as those operated by Aetna (AET), Cigna (CI), Humana (HUM) and UnitedHealth Group (UNH) as well as Blue Cross plans linking with ACOS to care for more patients.

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Among his decisions are rulings upholding an insurance company's waiver of a particular defense, sending litigation involving Cigna (nyse: CI - news - people ) back to England and one denying an award to a whistleblower who merely disclosed public information about SmithKline Beecham, now part of GlaxoSmithKline (nyse: GSK - news - people ).

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