Medicare Advantage in Warren County, New Jersey
10,221 people in Warren County, New Jersey were enrolled in Medicare Advantage in October 2026, 37.8% of 27,005 eligible beneficiaries (+0.2 pts since October 2025). CVS Health Corporation is the largest parent organization with 44% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,096 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 595 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 31 to 29.
Parent organizations in Warren County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 4,470 | −2 | 43.9% |
| UnitedHealth Group, Inc. | 2,938 | −191 | 28.9% |
| Humana Inc. | 1,629 | +579 | 16.0% |
| Horizon Mutual Holdings, Inc | 864 | +65 | 8.5% |
| Elevance Health, Inc. | 137 | +1 | 1.3% |
| Centene Corporation | 70 | −4 | 0.7% |
| Longevity Health Founders, LLC | 41 | +9 | 0.4% |
| Health Care Service Corporation | 24 | −58 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 6,417 beneficiaries in Warren County were assigned to 72 Medicare Shared Savings Program ACOs, 53.2% of assignable Original Medicare beneficiaries. Together, roughly 71% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.