Turn this market into a marketing plan. Marketing intelligence re-weights the same CMS county figures for media investment decisions, and carries the MA and D-SNP modes side by side.
Where is Medicare Advantage gaining or losing share, and how fast?
Penetration, momentum, and concentration — national to county.
Vintages differ by dataset on this page. Each card states the CMS source and the period its figure covers; enrollment, plan, star-rating and policy files are published on different schedules and are never forced onto one date. Every source, vintage and refresh cadence →
Which Medicare markets deserve attention?
Who is actually in a Special Needs Plan, and where is the room left?
Where is the MA & other health plan share highest — and where is the headroom?
Which counties are gaining health plan share fastest?
Has Medicare Advantage passed half of Medicare?
Where are dual-eligible concentrations highest?
How concentrated is each state's MA market (HHI)?
State-level HHI concentration scores are on the public roadmap, arriving with the full-county enrollment pipeline.