Medicare Advantage in Carolina, Puerto Rico
30,539 people in Carolina, Puerto Rico were enrolled in Medicare Advantage in October 2026, 90.9% of 33,609 eligible beneficiaries (−0.1 pts since October 2025). MHH Healthcare, L.P. is the largest parent organization with 48% of reported enrollment; 3 parent organizations have 11 or more members and the HHI is 3,797 (highly concentrated). For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 21 to 22.
Parent organizations in Carolina
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| MHH Healthcare, L.P. | 14,681 | +1,316 | 48.1% |
| Elevance Health, Inc. | 10,418 | −646 | 34.2% |
| Guidewell Mutual Holding Corporation | 5,401 | +317 | 17.7% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 53 beneficiaries in Carolina were assigned to 25 Medicare Shared Savings Program ACOs, 5.8% of assignable Original Medicare beneficiaries. Together, roughly 91% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.