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Patsy Newitt

Optum's third-quarter revenue is up 17 percent from the same quarter last year, reaching $46.6 billion, according to financial results released Oct. 14 by parent company UnitedHealth Group. 

Ronald Rittenmeyer, the former executive chair and CEO of Tenet Healthcare, died Oct. 11 at 75. 

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Here are three key moves by Optum, parent company of ASC chain SCA Health, in the third quarter:

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