Medicare Advantage in Isabela, Puerto Rico
9,423 people in Isabela, Puerto Rico were enrolled in Medicare Advantage in October 2026, 88.9% of 10,602 eligible beneficiaries (+1.5 pts since October 2025). MHH Healthcare, L.P. is the largest parent organization with 65% of reported enrollment; 3 parent organizations have 11 or more members and the HHI is 4,988 (highly concentrated). For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 23 to 24.
Parent organizations in Isabela
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| MHH Healthcare, L.P. | 6,093 | +170 | 64.8% |
| Guidewell Mutual Holding Corporation | 2,528 | +413 | 26.9% |
| Elevance Health, Inc. | 785 | −171 | 8.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 9 beneficiaries in Isabela were assigned to 4 Medicare Shared Savings Program ACOs, 6.0% of assignable Original Medicare beneficiaries. Together, roughly 90% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.