Medicare Advantage in Lewis County, New York
3,957 people in Lewis County, New York were enrolled in Medicare Advantage in October 2026, 63.8% of 6,202 eligible beneficiaries (+0.2 pts since October 2025). Lifetime Healthcare, Inc. is the largest parent organization with 35% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,391 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 1,414 members here are in plans that terminate or leave the county. MA plans offered go from 29 to 23.
Parent organizations in Lewis County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Lifetime Healthcare, Inc. | 1,377 | +112 | 35.0% |
| UnitedHealth Group, Inc. | 1,013 | −132 | 25.7% |
| CVS Health Corporation | 679 | +224 | 17.2% |
| Humana Inc. | 428 | +198 | 10.9% |
| Centene Corporation | 374 | −307 | 9.5% |
| MVP Health Care, Inc. | 37 | −17 | 0.9% |
| Trinity Health Corporation | 30 | new | 0.8% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,511 beneficiaries in Lewis County were assigned to 24 Medicare Shared Savings Program ACOs, 72.0% of assignable Original Medicare beneficiaries. Together, roughly 90% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.