Medicare Advantage in Polk County, Texas
8,937 people in Polk County, Texas were enrolled in Medicare Advantage in October 2026, 46.8% of 19,111 eligible beneficiaries (+0.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 36% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 2,570 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 458 members here are in plans that terminate or leave the county. MA plans offered go from 27 to 25.
Parent organizations in Polk County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 3,210 | −96 | 36.3% |
| Health Care Service Corporation | 2,400 | −15 | 27.2% |
| Humana Inc. | 1,798 | +303 | 20.3% |
| CVS Health Corporation | 771 | −143 | 8.7% |
| Elevance Health, Inc. | 356 | +135 | 4.0% |
| Centene Corporation | 250 | −72 | 2.8% |
| Molina Healthcare, Inc. | 23 | −1 | 0.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 20 | −8 | 0.2% |
| Kaiser Foundation Health Plan, Inc. | 11 | −2 | 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, 2,559 beneficiaries in Polk County were assigned to 270 Medicare Shared Savings Program ACOs, 35.6% of assignable Original Medicare beneficiaries. Together, roughly 66% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.