Medicare Advantage in Hamilton County, New York
855 people in Hamilton County, New York were enrolled in Medicare Advantage in October 2026, 50.2% of 1,704 eligible beneficiaries (−1.5 pts since October 2025). CVS Health Corporation is the largest parent organization with 35% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,446 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 291 members here are in plans that terminate or leave the county. MA plans offered go from 23 to 19.
Parent organizations in Hamilton County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 289 | +107 | 35.2% |
| Lifetime Healthcare, Inc. | 253 | +15 | 30.8% |
| UnitedHealth Group, Inc. | 76 | −126 | 9.2% |
| Centene Corporation | 65 | −5 | 7.9% |
| Humana Inc. | 62 | +38 | 7.5% |
| Elevance Health, Inc. | 60 | −6 | 7.3% |
| MVP Health Care, Inc. | 17 | −37 | 2.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 421 beneficiaries in Hamilton County were assigned to 26 Medicare Shared Savings Program ACOs, 63.0% of assignable Original Medicare beneficiaries. Together, roughly 82% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.