Medicare Advantage in Terrebonne, Louisiana
13,694 people in Terrebonne, Louisiana were enrolled in Medicare Advantage in October 2026, 59.6% of 22,981 eligible beneficiaries (+0.8 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 63% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 4,512 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 2,569 members here are in plans that terminate or leave the county. MA plans offered go from 23 to 22.
Parent organizations in Terrebonne
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 8,627 | +261 | 63.2% |
| Humana Inc. | 2,533 | +386 | 18.6% |
| CVS Health Corporation | 1,684 | −271 | 12.3% |
| Louisiana Health Service & Indemnity Company | 622 | +47 | 4.6% |
| Elevance Health, Inc. | 104 | +40 | 0.8% |
| Centene Corporation | 81 | −3 | 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, 4,039 beneficiaries in Terrebonne were assigned to 28 Medicare Shared Savings Program ACOs, 59.4% of assignable Original Medicare beneficiaries. Together, roughly 84% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.