CNN —America’s largest drug store chain named a new chief executive officer on Friday, with longtime CVS Health executive David Joyner replacing Karen Lynch. In August, rising costs at CVS’ insurance arm Aetna cut into profits, leading to the ousting of then-president Brian Kane. Charles Krupa/AP/FileLower reimbursement rates for prescription drugs have hit retail pharmacies, including Walgreens and Rite-Aid, resulting in flagging profits and forcing drug stores to shutter locations and cut jobs. Meanwhile, rival chain Walgreens is closing 1,200 stores as it faces competition from online pharmacies and larger retailers — another challenge facing drug stores. Our results need to show that more consistently,” a CVS Health spokesperson told CNN in a statement.

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Persons: CNN —, David Joyner, Karen Lynch, Brian Kane, Lynch, ” Julie Utterback, Charles Krupa, Joyner, David, Roger Farah Organizations: CNN, CVS Health, CVS, Aetna, Federal Trade Commission, Morningstar, Boston College's, Club, Walgreens, Rite, ” Locations: Boston