Medicare Advantage in Grayson County, Texas
15,806 people in Grayson County, Texas were enrolled in Medicare Advantage in October 2026, 47.8% of 33,044 eligible beneficiaries (+0.2 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 63% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 4,653 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 2,826 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 40 to 30.
Parent organizations in Grayson County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 9,922 | +67 | 63.1% |
| Humana Inc. | 3,918 | +323 | 24.9% |
| CVS Health Corporation | 1,057 | +61 | 6.7% |
| Health Care Service Corporation | 324 | −23 | 2.1% |
| Elevance Health, Inc. | 231 | +46 | 1.5% |
| Universal Health Services, Inc. | 216 | +106 | 1.4% |
| Molina Healthcare, Inc. | 31 | +5 | 0.2% |
| Centene Corporation | 30 | −75 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 6,677 beneficiaries in Grayson County were assigned to 75 Medicare Shared Savings Program ACOs, 53.1% of assignable Original Medicare beneficiaries. Together, roughly 76% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.