How is Medicare Advantage developing in Miami-Dade County, Florida?
Miami-Dade County's MA penetration is 74.2% — above the 57.8% national share by 16.4 points, with 1.343M MA enrollees of 1.81M Medicare beneficiaries as of Plan year 2026, with 2023–2026 penetration history. It ranks 1 of 10 Florida counties by penetration.
Penetration trajectory, 2023–2026
MA share of all Medicare beneficiaries in the county, plan years 2023–2026. Plan year 2026, with 2023–2026 penetration history.
Market structure in Miami-Dade County
| Top carrier | UHC |
| Carriers competing | 8 |
| MA enrollees | 1.343M |
| Total Medicare beneficiaries | 1.81M |
| D-SNP share of MA | 31% |
| Market type | Switcher (50%+ penetration) |
County carrier and D-SNP figures are the CPSC county extract (Plan year 2026, with 2023–2026 penetration history). Carrier-level enrollment and stars are tracked at the state level.
So what / Now what
Miami-Dade County is a switcher market at 74.2% penetration — expansion means winning members from incumbent MA plans on benefits, network, and brand. Momentum is strong (+1.35 pts YoY), so incumbents are actively adding share.
- Compare to the rest of Florida on the state page; with D-SNP at 31% of MA, review D-SNP deployment gaps
- Check 2026 plan exits for orphaned membership contestable in Florida.
- Sales teams: see how Florida ranks on the growth runway index and which competitive facts apply on the carrier battlecards.
Neighboring Florida counties
Provenance — County-level MA market snapshot (76 tracked counties)
- Source file
- CMS MA Enrollment by State/County/Plan (CPSC monthly files)
- Vintage
- Plan year 2026, with 2023–2026 penetration history
- Last updated
- May 1, 2026
- Refresh cadence
- Monthly (pipeline pending; currently a curated extract)
- Method
- Penetration, D-SNP share, carrier count and top carrier per county compiled from CPSC files for 76 high-signal counties.
- Known limitations
- Covers 76 tracked counties, not all ~3,100. Velocity = simple YoY penetration point change.