Medicare Advantage in San Juan, Puerto Rico
60,364 people in San Juan, Puerto Rico were enrolled in Medicare Advantage in October 2026, 72.9% of 82,818 eligible beneficiaries (−0.02 pts since October 2025). MHH Healthcare, L.P. is the largest parent organization with 50% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 3,787 (highly concentrated). For 2027, 17 members here are in plans that terminate or leave the county. MA plans offered go from 21 to 22.
Parent organizations in San Juan
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| MHH Healthcare, L.P. | 30,080 | +2,764 | 49.9% |
| Elevance Health, Inc. | 17,928 | −1,225 | 29.7% |
| Guidewell Mutual Holding Corporation | 12,273 | +712 | 20.4% |
| UnitedHealth Group, Inc. | 14 | +1 | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 214 beneficiaries in San Juan were assigned to 89 Medicare Shared Savings Program ACOs, 3.6% of assignable Original Medicare beneficiaries. Together, roughly 74% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.