Medicare Advantage in St. Lawrence County, New York
12,373 people in St. Lawrence County, New York were enrolled in Medicare Advantage in October 2026, 48.1% of 25,706 eligible beneficiaries (−0.04 pts since October 2025). CVS Health Corporation is the largest parent organization with 26% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,073 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 4,889 members here are in plans that terminate or leave the county. MA plans offered go from 25 to 15.
Parent organizations in St. Lawrence County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 3,243 | +1,314 | 26.4% |
| Centene Corporation | 2,745 | −106 | 22.3% |
| UnitedHealth Group, Inc. | 2,393 | −1,503 | 19.4% |
| Lifetime Healthcare, Inc. | 2,150 | −185 | 17.5% |
| Humana Inc. | 1,732 | +695 | 14.1% |
| Elevance Health, Inc. | 27 | −2 | 0.2% |
| MVP Health Care, Inc. | 17 | −95 | 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 7,682 beneficiaries in St. Lawrence County were assigned to 71 Medicare Shared Savings Program ACOs, 73.0% of assignable Original Medicare beneficiaries. Together, roughly 86% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.