Medicare Advantage in Oconto County, Wisconsin
8,448 people in Oconto County, Wisconsin were enrolled in Medicare Advantage in October 2026, 73.6% of 11,477 eligible beneficiaries (−0.2 pts since October 2025). Network Health, Inc. is the largest parent organization with 36% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,790 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 1,804 members here are in plans that terminate or leave the county, and Sanford Health leaves. MA plans offered go from 38 to 26.
Parent organizations in Oconto County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Network Health, Inc. | 2,998 | +1,467 | 35.6% |
| UnitedHealth Group, Inc. | 2,675 | −608 | 31.8% |
| Humana Inc. | 1,834 | +616 | 21.8% |
| Elevance Health, Inc. | 371 | −1,200 | 4.4% |
| HealthPartners, Inc. | 299 | −35 | 3.6% |
| CVS Health Corporation | 126 | +5 | 1.5% |
| Centene Corporation | 76 | +13 | 0.9% |
| Sanford Health | 36 | +3 | 0.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,498 beneficiaries in Oconto County were assigned to 14 Medicare Shared Savings Program ACOs, 75.7% of assignable Original Medicare beneficiaries. Together, roughly 94% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.