Medicare Advantage in Union County, New Jersey
45,538 people in Union County, New Jersey were enrolled in Medicare Advantage in October 2026, 46.8% of 97,284 eligible beneficiaries (+0.02 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 36% of reported enrollment; 11 parent organizations have 11 or more members and the HHI is 2,427 (highly concentrated). For 2027, 3,856 members here are in plans that terminate or leave the county, and Health Care Service Corporation, Healthfirst, Inc. leave. MA plans offered go from 44 to 37.
Parent organizations in Union County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 16,347 | −1,622 | 36.0% |
| CVS Health Corporation | 10,711 | −222 | 23.6% |
| Clover Health Holdings, Inc. | 9,499 | +1,930 | 20.9% |
| Horizon Mutual Holdings, Inc | 4,478 | +614 | 9.9% |
| Humana Inc. | 2,579 | +913 | 5.7% |
| Elevance Health, Inc. | 879 | −363 | 1.9% |
| Centene Corporation | 795 | −87 | 1.8% |
| Health Care Service Corporation | 50 | −91 | 0.1% |
| NY Hotel Trades Council&Hotel Assn of NYC | 35 | −1 | under 0.1% |
| Longevity Health Founders, LLC | 15 | +3 | under 0.1% |
| Healthfirst, Inc. | 14 | 0 | under 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, 22,681 beneficiaries in Union County were assigned to 117 Medicare Shared Savings Program ACOs, 68.7% of assignable Original Medicare beneficiaries. Together, roughly 83% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.