Just-released data from the Centers for Medicare & Medicaid Services (CMS) confirms that preferred cost sharing networks will continue to dominate Medicare Part D. Our exclusive analysis finds that for 2017, 73% of seniors are enrolled in Prescription Drug Plans (PDPs) with preferred pharmacy networks. The three biggest companies—Humana, UnitedHealthcare, and CVS Health's SilverScript—now account for 69% of enrollment in stand-alone Part D plans.
Below, we use the enrollment data to analyze the major pharmacy chains’ position within the 17 major multi-regional Part D plans with preferred networks. As you will see, Walgreens and Walmart are the big winners, while CVS and Rite Aid lag far behind.
As long as pharmacies are willing to accept lower reimbursements in exchange for increased store traffic, preferred networks will continue to grow. For 2017, Walgreens’ aggressive partnering strategy looks likely to result in significant prescription market share gains.
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