Market intelligence
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.
Which Medicare markets deserve attention?
3,199counties, filterable
CMS Monthly Enrollment · April 2026 · clickable county map, filters and CSV export
Open the county explorer →
Who is actually in a Special Needs Plan, and where is the room left?
8.44Min SNP plans, August 2026
CMS SNP Comprehensive Report · D-SNP capture proxy runs 54% nationally
Open SNP enrollment →
Where is the MA & other health plan share highest — and where is the headroom?
86.8%Puerto Rico, highest jurisdiction
April 2026 CMS county file
Explore states →
Which counties are gaining health plan share fastest?
+1.35 ptsMiami-Dade, FL YoY
Withdrawn — see the methodology archive
Explore counties →
Has Medicare Advantage passed half of Medicare?
50.8%of Medicare, 2026
Plan year 2026 (Feb 2026 enrollment)
See the trend →
Where are dual-eligible concentrations highest?
24.8%of Medicare in Mississippi
Data through 2025 Q4
Explore duals →
Coming next
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.
Planned CMS source: MA Enrollment by State/County/Plan (CPSC)