Medicare Advantage in Yuma County, Arizona
25,018 people in Yuma County, Arizona were enrolled in Medicare Advantage in October 2026, 53.3% of 46,961 eligible beneficiaries (+0.8 pts since October 2025). Centene Corporation is the largest parent organization with 34% of reported enrollment; 12 parent organizations have 11 or more members and the HHI is 2,464 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 2,452 members here are in plans that terminate or leave the county, and Kaiser Foundation Health Plan, Inc. leaves. MA plans offered go from 16 to 17.
Parent organizations in Yuma County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Centene Corporation | 8,382 | +1,542 | 33.8% |
| Humana Inc. | 6,433 | +3,165 | 25.9% |
| UnitedHealth Group, Inc. | 5,477 | −267 | 22.1% |
| Banner Health | 2,890 | −3,839 | 11.7% |
| Devoted Health, Inc. | 1,232 | +512 | 5.0% |
| CVS Health Corporation | 203 | −12 | 0.8% |
| Elevance Health, Inc. | 85 | +24 | 0.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 37 | +1 | 0.1% |
| California Physicians' Service | 21 | +3 | under 0.1% |
| Kaiser Foundation Health Plan, Inc. | 20 | −4 | under 0.1% |
| Highmark Health | 11 | 0 | under 0.1% |
| Mercy Care | 11 | new | 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, 5,510 beneficiaries in Yuma County were assigned to 113 Medicare Shared Savings Program ACOs, 36.9% 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.