Skip to main content
Senior Deal Club

Medicare Advantage Enrollment Tracker · Puerto Rico

Medicare Advantage Enrollment in Puerto Rico

Puerto Rico had 682,537 Medicare Advantage members in September 2026, by the CMS county file, which includes employer group plans. That is up 1.7% from Sep 2025, close to the national 2.0%. Puerto Rico ranks 21st by members and holds 1.9% of the national total.

MHH Healthcare leads with 52.7% of members who have a carrier label (contract file, September 2026). Among individual plans, which leave out employer group coverage, enrollment is unchanged in the 12 months to September 2026.

By Senior Deal Club Standards Desk · Data as of September 2026 · Editorial policy

Data as ofCMS public files, monthly snapshot

  • These totals include employer and union group plans.
    Why this matters

    The CMS contract and county files count group plans that retirees get through a former employer. They are not plans you can pick on your own. Counts here are larger than the individual-plan counts on county pages.

  • Some months are missing from the source.
    Why this matters

    CMS did not publish every month. Lines break at a missing month instead of guessing a value. A dotted line, where shown, only joins the two sides.

Puerto Rico at a glance

Medicare Advantage members

682,537

Puerto Rico members by month: from 640K in Jan 2023 to 683K in Sep 2026

County file · Sep 2026. Includes employer group plans. Rank: 21.

County file · Sep 2026
CMS state, county and plan-type file (SCP). The same plans split by state and county, with employer and union group plans included. CMS hides counts of 10 or fewer.

12-month change

+1.7%

up 1.7 percent vs Sep 2025

County file · Sep 2026. National: +2.0%.

Share of national total

1.9%

County file · Sep 2026. Of jurisdictions that report every month.

Individual plan members

572,357

Individual MA · Sep 2026. Employer group plans left out.

Individual MA · Sep 2026
Individual Medicare Advantage plans (IND), from county data. Employer and union group plans are left out, so counts are smaller than in the other two files.

Largest carrier

MHH Healthcare

52.7% of members with a carrier label. Contract file · Sep 2026.

Puerto Rico members by month

Medicare Advantage members in Puerto Rico

Members, by month.

County file · Sep 2026
CMS state, county and plan-type file (SCP). The same plans split by state and county, with employer and union group plans included. CMS hides counts of 10 or fewer.
Medicare Advantage members in Puerto RicoLine chart, January 2023 to September 2026. Puerto Rico: 683K in September 2026. Shaded bands mark months with no data.620K640K660K680K700K2023202420252026Puerto Rico683K
Medicare Advantage members in Puerto RicoLine chart, January 2023 to September 2026. Puerto Rico: 683K in September 2026. Shaded bands mark months with no data.620K640K660K680K700K20232025Puerto683K
  • Puerto Rico
  • Shaded: no data that month
View the data table
Medicare Advantage members in Puerto Rico: values by month
MonthPuerto Rico
Sep 2026683K
Aug 2026682K
Jul 2026681K
Jun 2026680K
May 2026679K
Apr 2026678K
Mar 2026677K
Feb 2026675K
Jan 2026672K
Dec 2025673K
Nov 2025672K
Oct 2025672K
Sep 2025671K
Aug 2025670K
Jul 2025669K
Jun 2025669K
May 2025668K
Apr 2025666K
Mar 2025665K
Feb 2025663K
Jan 2025658K
Dec 2024662K
Nov 2024662K
Oct 2024661K
Sep 2024660K
Aug 2024660K
Jul 2024660K
Jun 2024659K
May 2024658K
Apr 2024657K
Mar 2024656K
Feb 2024654K
Jan 2024653K
Dec 2023–
Nov 2023651K
Oct 2023651K
Sep 2023650K
Aug 2023649K
Jul 2023–
Jun 2023648K
May 2023647K
Apr 2023645K
Mar 2023644K
Feb 2023642K
Jan 2023640K

County file · Sep 2026. Employer group plans included.

Puerto Rico and the nation, Jan 2023 = 100

Each line is members divided by members in the start month, times 100.

County file · Sep 2026
CMS state, county and plan-type file (SCP). The same plans split by state and county, with employer and union group plans included. CMS hides counts of 10 or fewer.
Puerto Rico and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. Puerto Rico: 106.7 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.1001051101151202023202420252026National117.8Puerto Rico106.7
Puerto Rico and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. Puerto Rico: 106.7 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.10010511011512020232025National117.8Puerto106.7
  • Puerto Rico
  • National (same jurisdictions each month)
  • Shaded: no data that month
View the data table
Puerto Rico and the nation, Jan 2023 = 100: values by month
MonthPuerto RicoNational (same jurisdictions each month)
Sep 2026106.7117.8
Aug 2026106.6117.8
Jul 2026106.4117.5
Jun 2026106.3117.4
May 2026106.2117.2
Apr 2026106116.9
Mar 2026105.8116.7
Feb 2026105.6116.3
Jan 2026105.1114.7
Dec 2025105.3115.9
Nov 2025105.1115.9
Oct 2025105115.7
Sep 2025104.9115.5
Aug 2025104.8115.3
Jul 2025104.7115
Jun 2025104.5114.8
May 2025104.4114.4
Apr 2025104.1114.2
Mar 2025103.9113.8
Feb 2025103.7113.4
Jan 2025102.9111.9
Dec 2024103.6112
Nov 2024103.4112
Oct 2024103.4111.7
Sep 2024103.3111.5
Aug 2024103.2111.2
Jul 2024103.2110.9
Jun 2024103.1110.7
May 2024102.9110.5
Apr 2024102.7110
Mar 2024102.5109.7
Feb 2024102.2109.3
Jan 2024102108.7
Dec 2023––
Nov 2023101.8105.9
Oct 2023101.7105.6
Sep 2023101.6105.2
Aug 2023101.4104.9
Jul 2023––
Jun 2023101.2104.1
May 2023101.1103.8
Apr 2023100.9103.4
Mar 2023100.6103
Feb 2023100.3102.2
Jan 2023100100

County file · Sep 2026. National line sums the jurisdictions that report in every month.

Individual plans

Individual plans leave out employer and union group coverage, so counts are smaller than in the county file.

Carrier share in Puerto Rico

Share of members whose contract has a carrier label, September 2026 against September 2025.

Contract file · Sep 2026
CMS contract file (SCC). All Medicare Advantage contracts, with employer and union group plans included. It still lists Connecticut and Alaska.

MHH Healthcare leads with 52.7% of members who have a carrier label (contract file, September 2026).

Florida Blue/BCBS gained 2.6 points in 12 months; most of that change came in January 2026.

UnitedHealthcare and Humana together hold 0.0%, about the same as in Sep 2025.

The market is about as concentrated as a year earlier (direction only; the level depends on how carriers are grouped).

Carrier share, Sep 2025 to Sep 2026

Percent of members with a carrier label. Largest carriers.

Carrier share, Sep 2025 to Sep 2026Slope chart comparing Sep 2025 with Sep 2026. MHH Healthcare: 51.0% to 52.7%; Elevance/Anthem: 33.1% to 28.8%; Florida Blue/BCBS: 15.9% to 18.5%; UnitedHealthcare: 0.0% to 0.0%; Aetna/CVS: 0.0% to 0.0%.Sep 2025Sep 2026MHH Healthcare 51.0%52.7% MHH HealthcareElevance/Anthem 33.1%28.8% Elevance/AnthemFlorida Blue/BCBS 15.9%18.5% Florida Blue/BCBSUnitedHealthcare 0.0%0.0% UnitedHealthcareAetna/CVS 0.0%0.0% Aetna/CVS
Carrier share, Sep 2025 to Sep 2026Slope chart comparing Sep 2025 with Sep 2026. MHH Healthcare: 51.0% to 52.7%; Elevance/Anthem: 33.1% to 28.8%; Florida Blue/BCBS: 15.9% to 18.5%; UnitedHealthcare: 0.0% to 0.0%; Aetna/CVS: 0.0% to 0.0%.Sep 2025Sep 2026MHH 51.0%52.7%Elevance 33.1%28.8%Blue Cross 15.9%18.5%UHC 0.0%0.0%Aetna 0.0%0.0%
View the data table
Carrier share, Sep 2025 to Sep 2026: Sep 2025 and Sep 2026
NameSep 2025Sep 2026Change
MHH Healthcare51.0%52.7%+1.7 pts
Elevance/Anthem33.1%28.8%−4.3 pts
Florida Blue/BCBS15.9%18.5%+2.6 pts
UnitedHealthcare0.0%0.0%0.0 pts
Aetna/CVS0.0%0.0%0.0 pts

Contract file · Sep 2026. Employer group plans included.

Carrier share of Medicare Advantage members with a carrier label, Puerto Rico, September 2026
CarrierShare, Sep 2026Share, Sep 2025ChangeMembers
MHH Healthcare52.7%51.0%+1.7 pts359,424
Elevance/Anthem28.8%33.1%−4.3 pts196,045
Florida Blue/BCBS18.5%15.9%+2.6 pts126,176
UnitedHealthcare0.0%0.0%0.0 pts14
Aetna/CVS0.0%0.0%0.0 pts13
All other carriers0.0%––0

Insurer not assigned in CMS data: 0.0% of all members in Sep 2026, 3.5% in Sep 2025. Shares leave these members out. The unassigned share is above 3%, so treat share changes as rough. Contract IDs are renumbered each January, so this page follows carriers, not contracts. A contract that serves several states carries one carrier label, so a carrier can appear in a state where it is not a local plan. See the carrier view for the whole nation.

Biggest counties in Puerto Rico

Individual plan members and the 12-month change for each county, from county data.

Individual MA · Sep 2026
Individual Medicare Advantage plans (IND), from county data. Employer and union group plans are left out, so counts are smaller than in the other two files.
Biggest counties in Puerto Rico by individual Medicare Advantage members, September 2026
CountyMembers12-month changeLeading carrierLeader's share
San Juan46,157−3.1%MHH Healthcare54.9%
Bayamon30,140−4.7%MHH Healthcare52.8%
Ponce27,077+1.3%MHH Healthcare43.8%
Carolina22,952−2.5%MHH Healthcare54.4%
Caguas21,617−4.2%MHH Healthcare64.2%
Arecibo18,436+1.2%MHH Healthcare52.6%
Mayaguez14,782+1.0%MHH Healthcare71.1%
Guaynabo12,447−0.9%MHH Healthcare54.4%
Toa Baja12,115−0.7%MHH Healthcare59.6%
Humacao10,857−1.1%MHH Healthcare79.7%

Browse all counties.

Common questions

How many people have Medicare Advantage in Puerto Rico?

Puerto Rico had 682,537 members in September 2026, by the CMS county file (employer group plans included). Individual plans, which leave out employer group coverage, had 572,357 members in September 2026.

Is Medicare Advantage growing in Puerto Rico?

Enrollment is up 1.7% from Sep 2025 to Sep 2026, close to the national 2.0%. Among individual plans, which leave out employer group coverage, enrollment is unchanged in the 12 months to September 2026.

Which carrier has the most Medicare Advantage members in Puerto Rico?

MHH Healthcare leads with 52.7% of members who have a carrier label (contract file, September 2026). UnitedHealthcare and Humana together hold 0.0%, about the same as in Sep 2025. Shares leave out members whose contract has no carrier label: 0.0% of members.

Cite and download

Cite this page

Senior Deal Club Standards Desk. Medicare Advantage Enrollment in Puerto Rico, data as of September 2026. Source: CMS public enrollment files. https://www.seniordealclub.com/medicare-advantage/enrollment/states/puerto-rico

Download Puerto Rico CSV

Data: CMS public enrollment files, in a monthly snapshot processed by TapQuality. Senior Deal Club is not affiliated with Medicare or any government agency.

These pages are educational. They are not plan advice. How the numbers are built · Editorial policy