Medicare Advantage in Payette County, Idaho
3,709 people in Payette County, Idaho were enrolled in Medicare Advantage in October 2026, 54.1% of 6,853 eligible beneficiaries (−2.3 pts since October 2025). Gemstone Holdings, Inc. is the largest parent organization with 24% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,017 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 1,227 members here are in plans that terminate or leave the county, and Trinity Health Corporation leaves. MA plans offered go from 21 to 16.
Parent organizations in Payette County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Gemstone Holdings, Inc. | 883 | −708 | 24.0% |
| Trinity Health Corporation | 832 | +629 | 22.6% |
| UnitedHealth Group, Inc. | 807 | −363 | 21.9% |
| Humana Inc. | 730 | +266 | 19.8% |
| Molina Healthcare, Inc. | 207 | −24 | 5.6% |
| PacificSource | 187 | +131 | 5.1% |
| CVS Health Corporation | 25 | +6 | 0.7% |
| Elevance Health, Inc. | 11 | −4 | 0.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 554 beneficiaries in Payette County were assigned to 21 Medicare Shared Savings Program ACOs, 28.8% of assignable Original Medicare beneficiaries. Together, roughly 67% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.