As I’ve been warning for years, the Inflation Reduction Act of 2022 (IRA) has nearly obliterated the stand-alone Medicare Part D prescription drug plan (PDP) market.
DCI’s exclusive analysis of Center for Medicare & Medicaid Services’ (CMS) data reveals:
- The number of PDPs has plummeted by 55% since the IRA’s passage, to a record low of 360 plans for 2026.
- Preferred cost-sharing pharmacy networks are disappearing, with their share falling to the lowest level since 2014. That’s a post-IRA net loss of 505 plans with these networks.
- Just five companies—Aetna, Health Care Service Corporation, Humana, UnitedHealthcare, Wellcare—will account for 94% of all PDPs in 2026. In recent years, four major plan sponsors—Cigna, Clear Spring Health, Elevance Health, and Mutual of Omaha—have exited the PDP market.
See the charts below and our analysis of the remaining national players, along with updated data on preferred networks in Medicare Advantage prescription drug (MA-PD) plans.
Even with the demonstration program handouts, the Part D market is increasingly fragile: fewer choices, greater concentration, and massive disruption for beneficiaries.
Thanks, IRA! 🙃
What else should you expect for 2026? Find out during my upcoming live video webinar, Drug Channels Outlook 2026, on December 12, 2025, from 12:00 p.m. to 1:30 p.m. ET. Click here to learn more and sign up. As always, we are offering special discounts if you want to bring your whole team.
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