Medicare Advantage in Graham County, Arizona
3,652 people in Graham County, Arizona were enrolled in Medicare Advantage in October 2026, 57.0% of 6,406 eligible beneficiaries (+0.4 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 61% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 4,235 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 330 members here are in plans that terminate or leave the county. MA plans offered go from 21 to 19.
Parent organizations in Graham County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 2,202 | −225 | 61.1% |
| Centene Corporation | 572 | −1 | 15.9% |
| Humana Inc. | 539 | +232 | 15.0% |
| Banner Health | 150 | −1 | 4.2% |
| Devoted Health, Inc. | 102 | +29 | 2.8% |
| Gold Kidney Health Plan | 39 | +24 | 1.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 758 beneficiaries in Graham County were assigned to 22 Medicare Shared Savings Program ACOs, 42.1% of assignable Original Medicare beneficiaries. Together, roughly 75% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.