A Closer Look at the Medicare Part D Landscape
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Nov 22, 2023
As of 2023, about 50.5 million Medicare beneficiaries are enrolled in a plan with Part D prescription drug coverage, with 44% in stand-alone Prescription Drug Plans (PDPs) and 56% in Medicare Advantage Prescription Drug Plans (MA-PDs), according to a KFF analysis.
The three largest Part D insurers by market share — UnitedHealth Group, CVS Health Corp. and Humana Inc. — account for 57% of enrollment in 2023. More than half of UnitedHealth’s and Humana’s Part D enrollees chose MA-PDs, while the majority of CVS Health, Centene Corp. and The Cigna Group Part D enrollees are in PDPs.
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