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Medicare Advantage Enrollment Tracker · New Hampshire

Medicare Advantage Enrollment in New Hampshire

New Hampshire had 111,701 Medicare Advantage members in September 2026, by the CMS county file, which includes employer group plans. That is down 11.2% from Sep 2025, while the nation grew 2.0%. New Hampshire ranks 43rd by members and holds 0.3% of the national total.

Humana leads with 38.5% of members who have a carrier label (contract file, September 2026). UnitedHealthcare led a year earlier. Among individual plans, which leave out employer group coverage, enrollment is down 13.8% 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.

New Hampshire at a glance

Medicare Advantage members

111,701

New Hampshire members by month: from 103K in Jan 2023 to 112K in Sep 2026

County file · Sep 2026. Includes employer group plans. Rank: 43.

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

-11.2%

down 11.2 percent vs Sep 2025

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

Share of national total

0.3%

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

Individual plan members

83,807

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

38.5% of members with a carrier label. Contract file · Sep 2026.

New Hampshire members by month

Medicare Advantage members in New Hampshire

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 New HampshireLine chart, January 2023 to September 2026. New Hampshire: 112K in September 2026. Shaded bands mark months with no data.100K110K120K130K2023202420252026New Hampshire112K
Medicare Advantage members in New HampshireLine chart, January 2023 to September 2026. New Hampshire: 112K in September 2026. Shaded bands mark months with no data.100K110K120K130K20232025New112K
  • New Hampshire
  • Shaded: no data that month
View the data table
Medicare Advantage members in New Hampshire: values by month
MonthNew Hampshire
Sep 2026112K
Aug 2026112K
Jul 2026112K
Jun 2026112K
May 2026112K
Apr 2026111K
Mar 2026111K
Feb 2026110K
Jan 2026104K
Dec 2025126K
Nov 2025126K
Oct 2025126K
Sep 2025126K
Aug 2025126K
Jul 2025125K
Jun 2025125K
May 2025125K
Apr 2025124K
Mar 2025124K
Feb 2025123K
Jan 2025119K
Dec 2024120K
Nov 2024120K
Oct 2024120K
Sep 2024119K
Aug 2024119K
Jul 2024119K
Jun 2024118K
May 2024118K
Apr 2024117K
Mar 2024117K
Feb 2024117K
Jan 2024115K
Dec 2023–
Nov 2023111K
Oct 2023111K
Sep 2023110K
Aug 2023110K
Jul 2023–
Jun 2023109K
May 2023108K
Apr 2023107K
Mar 2023107K
Feb 2023106K
Jan 2023103K

County file · Sep 2026. Employer group plans included.

New Hampshire 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.
New Hampshire and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. New Hampshire: 108.4 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.1001101201302023202420252026National117.8New Hampshire108.4
New Hampshire and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. New Hampshire: 108.4 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.10011012013020232025National117.8New108.4
  • New Hampshire
  • National (same jurisdictions each month)
  • Shaded: no data that month
View the data table
New Hampshire and the nation, Jan 2023 = 100: values by month
MonthNew HampshireNational (same jurisdictions each month)
Sep 2026108.4117.8
Aug 2026108.4117.8
Jul 2026108.3117.5
Jun 2026108.4117.4
May 2026108.2117.2
Apr 2026108.1116.9
Mar 2026107.8116.7
Feb 2026106.9116.3
Jan 2026100.7114.7
Dec 2025122.1115.9
Nov 2025122.2115.9
Oct 2025122.2115.7
Sep 2025122.1115.5
Aug 2025121.9115.3
Jul 2025121.5115
Jun 2025121.1114.8
May 2025120.9114.4
Apr 2025120.6114.2
Mar 2025120.1113.8
Feb 2025118.9113.4
Jan 2025115111.9
Dec 2024116.5112
Nov 2024116.4112
Oct 2024116.2111.7
Sep 2024115.9111.5
Aug 2024115.6111.2
Jul 2024115.2110.9
Jun 2024114.9110.7
May 2024114.7110.5
Apr 2024114110
Mar 2024113.6109.7
Feb 2024113.2109.3
Jan 2024112.1108.7
Dec 2023––
Nov 2023108105.9
Oct 2023107.6105.6
Sep 2023107.1105.2
Aug 2023106.6104.9
Jul 2023––
Jun 2023105.4104.1
May 2023104.9103.8
Apr 2023104.3103.4
Mar 2023103.8103
Feb 2023103.1102.2
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 New Hampshire

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 38.5% of members who have a carrier label (contract file, September 2026). UnitedHealthcare led a year earlier.

Humana gained 29.1 points in 12 months; most of that change came in January 2026.

UnitedHealthcare lost 9.2 points in 12 months; most of that change came in January 2026.

UnitedHealthcare and Humana together hold 69.3%, up 19.9 points from Sep 2025.

The market is more 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: 9.4% to 38.5%; UnitedHealthcare: 40.0% to 30.8%; Elevance/Anthem: 16.5% to 14.1%; Aetna/CVS: 13.4% to 11.4%; BMC Health System: 8.9% to 4.6%; HCSC/BCBS: – to 0.3%.Sep 2025Sep 2026Humana 9.4%38.5% HumanaUnitedHealthcare 40.0%30.8% UnitedHealthcareElevance/Anthem 16.5%14.1% Elevance/AnthemAetna/CVS 13.4%11.4% Aetna/CVSBMC Health System 8.9%4.6% BMC Health System0.3% HCSC/BCBS
Carrier share, Sep 2025 to Sep 2026Slope chart comparing Sep 2025 with Sep 2026. Humana: 9.4% to 38.5%; UnitedHealthcare: 40.0% to 30.8%; Elevance/Anthem: 16.5% to 14.1%; Aetna/CVS: 13.4% to 11.4%; BMC Health System: 8.9% to 4.6%; HCSC/BCBS: – to 0.3%.Sep 2025Sep 2026Humana 9.4%38.5%UHC 40.0%30.8%Elevance 16.5%14.1%Aetna 13.4%11.4%BMC 8.9%4.6%0.3%
View the data table
Carrier share, Sep 2025 to Sep 2026: Sep 2025 and Sep 2026
NameSep 2025Sep 2026Change
Humana9.4%38.5%+29.1 pts
UnitedHealthcare40.0%30.8%−9.2 pts
Elevance/Anthem16.5%14.1%−2.3 pts
Aetna/CVS13.4%11.4%−2.0 pts
BMC Health System8.9%4.6%−4.3 pts
HCSC/BCBS–0.3%–

Contract file · Sep 2026. Employer group plans included.

Carrier share of Medicare Advantage members with a carrier label, New Hampshire, September 2026
CarrierShare, Sep 2026Share, Sep 2025ChangeMembers
Humana38.5%9.4%+29.1 pts42,798
UnitedHealthcare30.8%40.0%−9.2 pts34,194
Elevance/Anthem14.1%16.5%−2.3 pts15,707
Aetna/CVS11.4%13.4%−2.0 pts12,636
BMC Health System4.6%8.9%−4.3 pts5,112
HCSC/BCBS0.3%––349
BCBS Massachusetts0.1%0.0%+0.1 pts113
BCBS Michigan0.0%0.0%0.0 pts44
CareSource0.0%––40
Highmark/BCBS0.0%0.0%0.0 pts35
All other carriers0.0%––12
Martin's Point Health Care–11.7%––

Insurer not assigned in CMS data: 0.1% of all members in Sep 2026, 7.7% 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 New Hampshire

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 New Hampshire by individual Medicare Advantage members, September 2026
CountyMembers12-month changeLeading carrierLeader's share
Hillsborough26,775−2.7%UnitedHealthcare40.8%
Rockingham20,317−1.5%UnitedHealthcare40.3%
Merrimack9,735−3.4%Humana49.8%
Strafford9,101−2.1%Humana59.9%
Belknap4,973−12.5%Humana96.4%
Cheshire4,264−31.3%Humana88.4%
Grafton3,557−43.2%Humana86.1%
Coos2,751−17.5%Humana93.3%
Sullivan1,377−59.6%Humana70.4%
Carroll957−80.1%BMC Health System98.1%

Browse all counties.

Common questions

How many people have Medicare Advantage in New Hampshire?

New Hampshire had 111,701 members in September 2026, by the CMS county file (employer group plans included). Individual plans, which leave out employer group coverage, had 83,807 members in September 2026.

Is Medicare Advantage growing in New Hampshire?

Enrollment is down 11.2% from Sep 2025 to Sep 2026, while the nation grew 2.0%. Among individual plans, which leave out employer group coverage, enrollment is down 13.8% in the 12 months to September 2026.

Which carrier has the most Medicare Advantage members in New Hampshire?

Humana leads with 38.5% of members who have a carrier label (contract file, September 2026). UnitedHealthcare led a year earlier. UnitedHealthcare and Humana together hold 69.3%, up 19.9 points from Sep 2025. Shares leave out members whose contract has no carrier label: 0.1% of members.

Cite and download

Cite this page

Senior Deal Club Standards Desk. Medicare Advantage Enrollment in New Hampshire, data as of September 2026. Source: CMS public enrollment files. https://www.seniordealclub.com/medicare-advantage/enrollment/states/new-hampshire

Download New Hampshire 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