The fast-growing, for-profit hospital business is the latest segment of the health care industry to come under scrutiny by the House Energy & Commerce Committee. Chairman John D. Dingell (D-Mich.) plans to grill Humana Inc. Chief Executive David A. Jones at a hearing of the Oversight & Investigations subcommittee on Oct. 17. The probe will focus on pricing policies at Louisville-based Humana's chain of 81 hospitals, where, for example, a patient may end up paying $5 for an aspirin worth a fraction of a penny. At the hearing, Humana will deny that it overcharges.

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