Medicare market enters period of maturity and consolidation

The Medicare landscape is shifting toward a period of maturity and financial discipline. While Medicare Advantage remains dominant, with over 35 million Americans enrolled as of 2026, enrollment growth is slowing to approximately 3% annually, down from previous rates of 7% to 10%.

For beneficiaries, this market evolution may result in fewer available plans in certain regions, changes to provider networks, increased cost-sharing, and less generous supplemental benefits. Insurance companies are expected to prioritize profitability over rapid membership expansion.

Among popular supplemental options, Medigap Plan G and Plan N remain key choices for new enrollees. Plan N typically offers lower monthly premiums but requires small copays for doctor and emergency room visits. A critical distinction is that Plan G covers Part B excess charges, whereas Plan N does not, though certain states like New York and Massachusetts restrict these charges by law.