Medicare Advantage in Limestone County, Texas
2,942 people in Limestone County, Texas were enrolled in Medicare Advantage in October 2026, 53.1% of 5,539 eligible beneficiaries (+0.8 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 54% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,627 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 767 members here are in plans that terminate or leave the county. MA plans offered go from 20 to 17.
Parent organizations in Limestone County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,569 | +31 | 54.0% |
| CVS Health Corporation | 585 | +35 | 20.1% |
| Baylor Scott & White Health | 476 | +104 | 16.4% |
| Humana Inc. | 168 | +22 | 5.8% |
| Health Care Service Corporation | 47 | −35 | 1.6% |
| Centene Corporation | 43 | −91 | 1.5% |
| Rifkin Managed Care Holding, LLC | 18 | +5 | 0.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 397 beneficiaries in Limestone County were assigned to 29 Medicare Shared Savings Program ACOs, 20.2% of assignable Original Medicare beneficiaries. Together, roughly 63% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.