MA Enrollment Explorer / States / Puerto Rico
Medicare Advantage in Puerto Rico: enrollment, penetration and market share
683,600 people in Puerto Rico were enrolled in Medicare Advantage in October 2026. 85.1% of the state's 802,858 eligible Medicare beneficiaries are in Medicare Advantage, +0.4 pts since October 2025. MHH Healthcare, L.P. is the largest parent organization with 53% of reported enrollment; 5 parent organizations have 11 or more members, and the market's HHI is 3,949 (highly concentrated). Through the 2026 Annual Election Period (December to February), reported MA enrollment in Puerto Rico changed by +2,155 (+0.3%).
85.1%MA penetration, October 2026
684KMA enrollees
5parent organizations (11+ members)
3,949HHI, highly concentrated
Parent organizations in Puerto Rico
| Parent organization | Members | Change | Share | Share change |
|---|---|---|---|---|
| MHH Healthcare, L.P. | 360,181 | +27,547 | 52.8% | +3.2 pts |
| Elevance Health, Inc. | 195,324 | −18,560 | 28.6% | −3.3 pts |
| Guidewell Mutual Holding Corporation | 127,083 | +23,558 | 18.6% | +3.2 pts |
| UnitedHealth Group, Inc. | 14 | +1 | under 0.1% | +0.00 pts |
| CVS Health Corporation | 13 | 0 | under 0.1% | −0.00 pts |
Change and share change are since October 2025. Shares are of reported enrollment in the CMS State/County/Contract file.