Medicare Advantage in St. John the Baptist, Louisiana
6,909 people in St. John the Baptist, Louisiana were enrolled in Medicare Advantage in October 2026, 74.7% of 9,252 eligible beneficiaries (−0.7 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 4,254 (highly concentrated). For 2027, 1,150 members here are in plans that terminate or leave the county. MA plans offered go from 26 to 22.
Parent organizations in St. John the Baptist
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 3,692 | −192 | 53.6% |
| Humana Inc. | 2,526 | +338 | 36.7% |
| CVS Health Corporation | 289 | +1 | 4.2% |
| Louisiana Health Service & Indemnity Company | 244 | +47 | 3.5% |
| Centene Corporation | 55 | −4 | 0.8% |
| Devoted Health, Inc. | 50 | new | 0.7% |
| Elevance Health, Inc. | 28 | +5 | 0.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 541 beneficiaries in St. John the Baptist were assigned to 16 Medicare Shared Savings Program ACOs, 43.8% of assignable Original Medicare beneficiaries. Together, roughly 86% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.