Medicare Advantage in Grand Isle County, Vermont
263 people in Grand Isle County, Vermont were enrolled in Medicare Advantage in October 2026, 10.4% of 2,539 eligible beneficiaries (−27.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 44% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 3,696 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 0 members here are in plans that terminate or leave the county.
Parent organizations in Grand Isle County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 108 | −126 | 44.4% |
| Health Care Service Corporation | 97 | new | 39.9% |
| CVS Health Corporation | 23 | +3 | 9.5% |
| Humana Inc. | 15 | new | 6.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 54 beneficiaries in Grand Isle County were assigned to 20 Medicare Shared Savings Program ACOs, 5.0% of assignable Original Medicare beneficiaries. Together, roughly 15% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.