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Medicare Advantage Enrollment Tracker · American Samoa

Medicare Advantage Enrollment in American Samoa

American Samoa had 59 Medicare Advantage members in September 2026, by the CMS county file, which includes employer group plans. That is down 18.1% from Sep 2025, while the nation grew 2.0%. American Samoa holds 0.0% of the national total.

Hawaii Medical Service Association leads with 100.0% of members who have a carrier label (contract file, December 2025).

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.

American Samoa at a glance

Medicare Advantage members

59

American Samoa members by month: from 103 in Jan 2023 to 59 in Sep 2026

County file · Sep 2026. Includes employer group plans.

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

-18.1%

down 18.1 percent vs Sep 2025

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

Share of national total

0.0%

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

Largest carrier

Hawaii Medical Service Association

100.0% of members with a carrier label. Contract file · Dec 2025.

American Samoa members by month

Medicare Advantage members in American Samoa

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 American SamoaLine chart, January 2023 to September 2026. American Samoa: 59 in September 2026. Shaded bands mark months with no data.4060801001202023202420252026American Samoa59
Medicare Advantage members in American SamoaLine chart, January 2023 to September 2026. American Samoa: 59 in September 2026. Shaded bands mark months with no data.40608010012020232025American59
  • American Samoa
  • Shaded: no data that month
View the data table
Medicare Advantage members in American Samoa: values by month
MonthAmerican Samoa
Sep 202659
Aug 202670
Jul 202672
Jun 202674
May 202672
Apr 202672
Mar 202665
Feb 202666
Jan 202671
Dec 202574
Nov 202565
Oct 202565
Sep 202572
Aug 202570
Jul 202569
Jun 202573
May 202568
Apr 202569
Mar 202575
Feb 202576
Jan 202580
Dec 202468
Nov 202483
Oct 202487
Sep 202483
Aug 202489
Jul 202486
Jun 202486
May 2024106
Apr 2024113
Mar 2024113
Feb 2024120
Jan 2024116
Dec 2023–
Nov 2023108
Oct 2023105
Sep 2023110
Aug 2023112
Jul 2023–
Jun 2023110
May 2023108
Apr 2023105
Mar 2023107
Feb 2023113
Jan 2023103

County file · Sep 2026. Employer group plans included.

American Samoa 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.
American Samoa and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. American Samoa: 57.3 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.4060801001202023202420252026National117.8American Samoa57.3
American Samoa and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. American Samoa: 57.3 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.40608010012020232025National117.8American57.3
  • American Samoa
  • National (same jurisdictions each month)
  • Shaded: no data that month
View the data table
American Samoa and the nation, Jan 2023 = 100: values by month
MonthAmerican SamoaNational (same jurisdictions each month)
Sep 202657.3117.8
Aug 202668117.8
Jul 202669.9117.5
Jun 202671.8117.4
May 202669.9117.2
Apr 202669.9116.9
Mar 202663.1116.7
Feb 202664.1116.3
Jan 202668.9114.7
Dec 202571.8115.9
Nov 202563.1115.9
Oct 202563.1115.7
Sep 202569.9115.5
Aug 202568115.3
Jul 202567115
Jun 202570.9114.8
May 202566114.4
Apr 202567114.2
Mar 202572.8113.8
Feb 202573.8113.4
Jan 202577.7111.9
Dec 202466112
Nov 202480.6112
Oct 202484.5111.7
Sep 202480.6111.5
Aug 202486.4111.2
Jul 202483.5110.9
Jun 202483.5110.7
May 2024102.9110.5
Apr 2024109.7110
Mar 2024109.7109.7
Feb 2024116.5109.3
Jan 2024112.6108.7
Dec 2023––
Nov 2023104.9105.9
Oct 2023101.9105.6
Sep 2023106.8105.2
Aug 2023108.7104.9
Jul 2023––
Jun 2023106.8104.1
May 2023104.9103.8
Apr 2023101.9103.4
Mar 2023103.9103
Feb 2023109.7102.2
Jan 2023100100

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

Carrier share in American Samoa

Share of members whose contract has a carrier label, December 2025 against December 2024.

Contract file · Dec 2025
CMS contract file (SCC). All Medicare Advantage contracts, with employer and union group plans included. It still lists Connecticut and Alaska.

Hawaii Medical Service Association leads with 100.0% of members who have a carrier label (contract file, December 2025).

UnitedHealthcare and Humana together hold 0.0%, about the same as in Dec 2024.

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

Carrier share, Dec 2024 to Dec 2025

Percent of members with a carrier label. Largest carriers.

Carrier share, Dec 2024 to Dec 2025Slope chart comparing Dec 2024 with Dec 2025. Hawaii Medical Service Association: 100.0% to 100.0%.Dec 2024Dec 2025Hawaii 100.0%100.0% Hawaii
Carrier share, Dec 2024 to Dec 2025Slope chart comparing Dec 2024 with Dec 2025. Hawaii Medical Service Association: 100.0% to 100.0%.Dec 2024Dec 2025Hawaii 100.0%100.0%
View the data table
Carrier share, Dec 2024 to Dec 2025: Dec 2024 and Dec 2025
NameDec 2024Dec 2025Change
Hawaii Medical Service Association100.0%100.0%0.0 pts

Contract file · Dec 2025. Employer group plans included.

Carrier share of Medicare Advantage members with a carrier label, American Samoa, December 2025
CarrierShare, Dec 2025Share, Dec 2024ChangeMembers
Hawaii Medical Service Association100.0%100.0%0.0 pts14
All other carriers0.0%––0

Insurer not assigned in CMS data: 44.0% of all members in Dec 2025, 0.0% in Dec 2024. 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.

Common questions

How many people have Medicare Advantage in American Samoa?

American Samoa had 59 members in September 2026, by the CMS county file (employer group plans included).

Is Medicare Advantage growing in American Samoa?

Enrollment is down 18.1% from Sep 2025 to Sep 2026, while the nation grew 2.0%.

Which carrier has the most Medicare Advantage members in American Samoa?

Hawaii Medical Service Association leads with 100.0% of members who have a carrier label (contract file, December 2025). UnitedHealthcare and Humana together hold 0.0%, about the same as in Dec 2024. Shares leave out members whose contract has no carrier label: 44.0% of members.

Cite and download

Cite this page

Senior Deal Club Standards Desk. Medicare Advantage Enrollment in American Samoa, data as of September 2026. Source: CMS public enrollment files. https://www.seniordealclub.com/medicare-advantage/enrollment/states/american-samoa

Download American Samoa 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