Medicare Advantage in Windsor County, Vermont
2,496 people in Windsor County, Vermont were enrolled in Medicare Advantage in October 2026, 14.1% of 17,677 eligible beneficiaries (−14.8 pts since October 2025). Humana Inc. is the largest parent organization with 59% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 4,056 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 2 to 4.
Parent organizations in Windsor County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 1,446 | +790 | 58.7% |
| Health Care Service Corporation | 538 | +510 | 21.8% |
| CVS Health Corporation | 212 | +30 | 8.6% |
| UnitedHealth Group, Inc. | 184 | −742 | 7.5% |
| Elevance Health, Inc. | 71 | −3 | 2.9% |
| Highmark Health | 14 | −6 | 0.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 4,248 beneficiaries in Windsor County were assigned to 71 Medicare Shared Savings Program ACOs, 48.8% of assignable Original Medicare beneficiaries. Together, roughly 56% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.