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Medicare Advantage Enrollment Tracker · Vermont

Medicare Advantage Enrollment in Vermont

Vermont had 20,705 Medicare Advantage members in September 2026, by the CMS county file, which includes employer group plans. That is down 59.9% from Sep 2025, while the nation grew 2.0%. Vermont ranks 49th by members and holds 0.1% of the national total.

Humana leads with 39.7% of members who have a carrier label (contract file, September 2026). UnitedHealthcare led a year earlier. Vermont's individual plan ended in many counties, so no 12-month percent is shown.

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.

Vermont at a glance

Medicare Advantage members

20,705

Vermont members by month: from 44.8K in Jan 2023 to 20.7K in Sep 2026

County file · Sep 2026. Includes employer group plans. Rank: 49.

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

-59.9%

down 59.9 percent vs Sep 2025

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

Share of national total

0.1%

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

Individual plan members

7,799

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

Humana

39.7% of members with a carrier label. Contract file · Sep 2026.

Vermont members by month

Medicare Advantage members in Vermont

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 VermontLine chart, January 2023 to September 2026. Vermont: 20.7K in September 2026. Shaded bands mark months with no data.20K30K40K50K60K2023202420252026Vermont20.7K
Medicare Advantage members in VermontLine chart, January 2023 to September 2026. Vermont: 20.7K in September 2026. Shaded bands mark months with no data.20K30K40K50K60K20232025Vermont20.7K
  • Vermont
  • Shaded: no data that month
View the data table
Medicare Advantage members in Vermont: values by month
MonthVermont
Sep 202620.7K
Aug 202620.7K
Jul 202620.7K
Jun 202620.7K
May 202620.7K
Apr 202620.7K
Mar 202620.7K
Feb 202620.6K
Jan 202620.4K
Dec 202551.4K
Nov 202551.7K
Oct 202551.7K
Sep 202551.7K
Aug 202551.6K
Jul 202551.5K
Jun 202551.4K
May 202551.2K
Apr 202551.1K
Mar 202550.8K
Feb 202549.6K
Jan 202546.8K
Dec 202453.8K
Nov 202453.8K
Oct 202453.8K
Sep 202453.8K
Aug 202453.6K
Jul 202453.3K
Jun 202453.2K
May 202453.3K
Apr 202452.7K
Mar 202452.5K
Feb 202452.3K
Jan 202452.1K
Dec 2023–
Nov 202350K
Oct 202349.9K
Sep 202349.7K
Aug 202349.5K
Jul 2023–
Jun 202348.9K
May 202348.8K
Apr 202348.6K
Mar 202348.4K
Feb 202348.1K
Jan 202344.8K

County file · Sep 2026. Employer group plans included.

Vermont 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.
Vermont and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. Vermont: 46.2 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.4060801001201402023202420252026National117.8Vermont46.2
Vermont and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. Vermont: 46.2 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.40608010012014020232025National117.8Vermont46.2
  • Vermont
  • National (same jurisdictions each month)
  • Shaded: no data that month
View the data table
Vermont and the nation, Jan 2023 = 100: values by month
MonthVermontNational (same jurisdictions each month)
Sep 202646.2117.8
Aug 202646.3117.8
Jul 202646.3117.5
Jun 202646.3117.4
May 202646.2117.2
Apr 202646.2116.9
Mar 202646.2116.7
Feb 202646.1116.3
Jan 202645.5114.7
Dec 2025114.8115.9
Nov 2025115.4115.9
Oct 2025115.5115.7
Sep 2025115.4115.5
Aug 2025115.3115.3
Jul 2025115115
Jun 2025114.7114.8
May 2025114.4114.4
Apr 2025114114.2
Mar 2025113.4113.8
Feb 2025110.7113.4
Jan 2025104.5111.9
Dec 2024120.2112
Nov 2024120.2112
Oct 2024120.2111.7
Sep 2024120.1111.5
Aug 2024119.7111.2
Jul 2024119110.9
Jun 2024118.7110.7
May 2024119110.5
Apr 2024117.6110
Mar 2024117.2109.7
Feb 2024116.9109.3
Jan 2024116.4108.7
Dec 2023––
Nov 2023111.7105.9
Oct 2023111.4105.6
Sep 2023110.9105.2
Aug 2023110.5104.9
Jul 2023––
Jun 2023109.3104.1
May 2023109.1103.8
Apr 2023108.6103.4
Mar 2023108.1103
Feb 2023107.5102.2
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 Vermont

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.

Humana leads with 39.7% of members who have a carrier label (contract file, September 2026). UnitedHealthcare led a year earlier.

Humana gained 22.7 points in 12 months; most of that change came in January 2026.

HCSC/BCBS gained 27.2 points in 12 months; most of that change came in January 2026.

UnitedHealthcare and Humana together hold 59.5%, down 26.4 points from Sep 2025.

The market is less concentrated than 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. Humana: 17.0% to 39.7%; HCSC/BCBS: 4.0% to 31.2%; UnitedHealthcare: 69.0% to 19.9%; Aetna/CVS: 8.0% to 7.5%; Elevance/Anthem: 1.9% to 1.6%; Highmark/BCBS: 0.1% to 0.1%.Sep 2025Sep 2026Humana 17.0%39.7% HumanaHCSC/BCBS 4.0%31.2% HCSC/BCBSUnitedHealthcare 69.0%19.9% UnitedHealthcareAetna/CVS 8.0%7.5% Aetna/CVSElevance/Anthem 1.9%1.6% Elevance/AnthemHighmark/BCBS 0.1%0.1% Highmark/BCBS
Carrier share, Sep 2025 to Sep 2026Slope chart comparing Sep 2025 with Sep 2026. Humana: 17.0% to 39.7%; HCSC/BCBS: 4.0% to 31.2%; UnitedHealthcare: 69.0% to 19.9%; Aetna/CVS: 8.0% to 7.5%; Elevance/Anthem: 1.9% to 1.6%; Highmark/BCBS: 0.1% to 0.1%.Sep 2025Sep 2026Humana 17.0%39.7%Blue Cross 4.0%31.2%UHC 69.0%19.9%Aetna 8.0%7.5%Elevance 1.9%1.6%Blue Cross 0.1%0.1%
View the data table
Carrier share, Sep 2025 to Sep 2026: Sep 2025 and Sep 2026
NameSep 2025Sep 2026Change
Humana17.0%39.7%+22.7 pts
HCSC/BCBS4.0%31.2%+27.2 pts
UnitedHealthcare69.0%19.9%−49.1 pts
Aetna/CVS8.0%7.5%−0.5 pts
Elevance/Anthem1.9%1.6%−0.2 pts
Highmark/BCBS0.1%0.1%0.0 pts

Contract file · Sep 2026. Employer group plans included.

Carrier share of Medicare Advantage members with a carrier label, Vermont, September 2026
CarrierShare, Sep 2026Share, Sep 2025ChangeMembers
Humana39.7%17.0%+22.7 pts8,077
HCSC/BCBS31.2%4.0%+27.2 pts6,359
UnitedHealthcare19.9%69.0%−49.1 pts4,045
Aetna/CVS7.5%8.0%−0.5 pts1,521
Elevance/Anthem1.6%1.9%−0.2 pts330
Highmark/BCBS0.1%0.1%0.0 pts15
BCBS Michigan0.1%0.1%0.0 pts11
All other carriers0.0%––0

Insurer not assigned in CMS data: 0.0% of all members in Sep 2026, 65.7% 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 Vermont

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 Vermont by individual Medicare Advantage members, September 2026
CountyMembers12-month changeLeading carrierLeader's share
Windham2,042−28.9%Humana100.0%
Bennington1,924−25.2%Humana100.0%
Windsor1,418−63.9%Humana100.0%
Caledonia1,105−43.9%Humana100.0%
Orange871−50.4%Humana100.0%
Essex439−15.4%Humana100.0%

8 of 14 counties have no individual plan row. Those read "not reported", not zero. Browse all counties.

Common questions

How many people have Medicare Advantage in Vermont?

Vermont had 20,705 members in September 2026, by the CMS county file (employer group plans included). Individual plans, which leave out employer group coverage, had 7,799 members in September 2026.

Is Medicare Advantage growing in Vermont?

Enrollment is down 59.9% from Sep 2025 to Sep 2026, while the nation grew 2.0%. Vermont's individual plan ended in many counties, so no 12-month percent is shown.

Which carrier has the most Medicare Advantage members in Vermont?

Humana leads with 39.7% of members who have a carrier label (contract file, September 2026). UnitedHealthcare led a year earlier. UnitedHealthcare and Humana together hold 59.5%, down 26.4 points from 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 Vermont, data as of September 2026. Source: CMS public enrollment files. https://www.seniordealclub.com/medicare-advantage/enrollment/states/vermont

Download Vermont 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