Medicare Advantage in Guaynabo, Puerto Rico
16,317 people in Guaynabo, Puerto Rico were enrolled in Medicare Advantage in October 2026, 79.6% of 20,489 eligible beneficiaries (+1.8 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 3,675 (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 Guaynabo
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| MHH Healthcare, L.P. | 7,865 | +1,054 | 48.3% |
| Elevance Health, Inc. | 4,545 | −209 | 27.9% |
| Guidewell Mutual Holding Corporation | 3,889 | +301 | 23.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 66 beneficiaries in Guaynabo were assigned to 31 Medicare Shared Savings Program ACOs, 3.3% of assignable Original Medicare beneficiaries. Together, roughly 80% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.