KFF details Medicare Advantage enrollment trends for 2026
KFF reports that Medicare Advantage now covers 55% of eligible Medicare beneficiaries in 2026, with growth slowing but enrollment still rising. The analysis also shows increasing concentration in special needs plans and among a few large insurers.
Source: Kff ·
Medicare Advantage now covers the majority of eligible beneficiaries, and that concentration is tightening around fewer insurers—which means your plan choices at 65 may look very different from your parents' did. If you're 50–60 and picturing a straightforward Medicare experience, the narrowing network of major carriers could affect which doctors you can see or how much choice you'll have. Special needs plans are absorbing more new enrollees, signaling a shift in how coverage is being packaged. Worth checking with your future healthcare provider now whether they participate in the dominant plans in your area, so you're not blindsided when eligibility arrives.
- •Medicare Advantage enrollment reached a majority of eligible beneficiaries in 2026.
- •Special needs plans are taking a larger share of new enrollment.
- •Plan concentration among major insurers remains high nationwide.
This matters for retirement planning because Medicare Advantage remains a major coverage option, and its growing market share affects plan choice, access, and costs.