Medicare Advantage in Collin County, Texas
70,771 people in Collin County, Texas were enrolled in Medicare Advantage in October 2026, 42.7% of 165,730 eligible beneficiaries (−0.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 58% of reported enrollment; 15 parent organizations have 11 or more members and the HHI is 3,874 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 11,562 members here are in plans that terminate or leave the county. MA plans offered go from 59 to 40.
Parent organizations in Collin County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 41,136 | +137 | 58.3% |
| Humana Inc. | 12,240 | +2,415 | 17.3% |
| Health Care Service Corporation | 7,543 | +89 | 10.7% |
| CVS Health Corporation | 4,688 | +170 | 6.6% |
| Baylor Scott & White Health | 2,536 | +812 | 3.6% |
| Centene Corporation | 1,085 | −405 | 1.5% |
| Elevance Health, Inc. | 799 | +297 | 1.1% |
| Molina Healthcare, Inc. | 232 | −3 | 0.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 106 | −4 | 0.2% |
| Rifkin Managed Care Holding, LLC | 52 | new | under 0.1% |
| California Physicians' Service | 40 | +6 | under 0.1% |
| First Sacramento Capital Funding LLC | 37 | −24 | under 0.1% |
| Louisiana Health Service & Indemnity Company | 26 | new | under 0.1% |
| Highmark Health | 23 | −1 | under 0.1% |
| Verda Healthcare, Inc. | 22 | 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, 17,478 beneficiaries in Collin County were assigned to 233 Medicare Shared Savings Program ACOs, 28.1% of assignable Original Medicare beneficiaries. Together, roughly 59% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.