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Medicare Advantage Enrollment Tracker · North Dakota

Medicare Advantage Enrollment in North Dakota

North Dakota had 54,554 Medicare Advantage members in September 2026, by the CMS county file, which includes employer group plans. That is up 1.1% from Sep 2025, slower than the national 2.0%. North Dakota ranks 47th by members and holds 0.2% of the national total.

Medica leads with 61.2% of members who have a carrier label (contract file, September 2026). BCBS Michigan led a year earlier. Among individual plans, which leave out employer group coverage, enrollment is up 2.2% 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.

North Dakota at a glance

Medicare Advantage members

54,554

North Dakota members by month: from 41.7K in Jan 2023 to 54.6K in Sep 2026

County file · Sep 2026. Includes employer group plans. Rank: 47.

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

+1.1%

up 1.1 percent vs Sep 2025

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

Share of national total

0.2%

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

Individual plan members

50,781

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

Medica

61.2% of members with a carrier label. Contract file · Sep 2026.

North Dakota members by month

Medicare Advantage members in North Dakota

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 North DakotaLine chart, January 2023 to September 2026. North Dakota: 54.6K in September 2026. Shaded bands mark months with no data.40K45K50K55K2023202420252026North Dakota54.6K
Medicare Advantage members in North DakotaLine chart, January 2023 to September 2026. North Dakota: 54.6K in September 2026. Shaded bands mark months with no data.40K45K50K55K20232025North54.6K
  • North Dakota
  • Shaded: no data that month
View the data table
Medicare Advantage members in North Dakota: values by month
MonthNorth Dakota
Sep 202654.6K
Aug 202654.6K
Jul 202654.5K
Jun 202654.5K
May 202654.4K
Apr 202654.4K
Mar 202654.2K
Feb 202653.9K
Jan 202651.7K
Dec 202554.1K
Nov 202554.2K
Oct 202554.1K
Sep 202553.9K
Aug 202553.8K
Jul 202553.6K
Jun 202553.5K
May 202553.3K
Apr 202553.1K
Mar 202552.9K
Feb 202552.4K
Jan 202551.2K
Dec 202451.2K
Nov 202451.2K
Oct 202451K
Sep 202450.8K
Aug 202450.7K
Jul 202450.5K
Jun 202450.3K
May 202450K
Apr 202449.8K
Mar 202449.6K
Feb 202448.5K
Jan 202448K
Dec 2023–
Nov 202345.7K
Oct 202345.5K
Sep 202345.3K
Aug 202345.1K
Jul 2023–
Jun 202344.1K
May 202343.9K
Apr 202343.6K
Mar 202343.4K
Feb 202343.1K
Jan 202341.7K

County file · Sep 2026. Employer group plans included.

North Dakota 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.
North Dakota and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. North Dakota: 130.7 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.1001101201301402023202420252026North Dakota130.7National117.8
North Dakota and the nation, Jan 2023 = 100Line chart, January 2023 to September 2026. North Dakota: 130.7 in September 2026. National (same jurisdictions each month): 117.8 in September 2026. Shaded bands mark months with no data.10011012013014020232025North130.7National117.8
  • North Dakota
  • National (same jurisdictions each month)
  • Shaded: no data that month
View the data table
North Dakota and the nation, Jan 2023 = 100: values by month
MonthNorth DakotaNational (same jurisdictions each month)
Sep 2026130.7117.8
Aug 2026130.8117.8
Jul 2026130.6117.5
Jun 2026130.5117.4
May 2026130.3117.2
Apr 2026130.3116.9
Mar 2026129.9116.7
Feb 2026129.2116.3
Jan 2026124114.7
Dec 2025129.7115.9
Nov 2025129.8115.9
Oct 2025129.5115.7
Sep 2025129.2115.5
Aug 2025128.8115.3
Jul 2025128.5115
Jun 2025128.1114.8
May 2025127.8114.4
Apr 2025127.3114.2
Mar 2025126.7113.8
Feb 2025125.5113.4
Jan 2025122.8111.9
Dec 2024122.7112
Nov 2024122.6112
Oct 2024122.3111.7
Sep 2024121.8111.5
Aug 2024121.4111.2
Jul 2024121110.9
Jun 2024120.5110.7
May 2024119.8110.5
Apr 2024119.4110
Mar 2024118.8109.7
Feb 2024116.3109.3
Jan 2024115.1108.7
Dec 2023––
Nov 2023109.5105.9
Oct 2023109105.6
Sep 2023108.5105.2
Aug 2023108104.9
Jul 2023––
Jun 2023105.7104.1
May 2023105.2103.8
Apr 2023104.6103.4
Mar 2023104103
Feb 2023103.3102.2
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 North Dakota

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.

Medica leads with 61.2% of members who have a carrier label (contract file, September 2026). BCBS Michigan led a year earlier.

Medica gained 26.0 points in 12 months; most of that change came in January 2026.

BCBS Michigan lost 26.8 points in 12 months; most of that change came in January 2026.

UnitedHealthcare and Humana together hold 11.9%, down 2.0 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. Medica: 35.2% to 61.2%; BCBS Michigan: 39.3% to 12.5%; UnitedHealthcare: 11.8% to 11.9%; Sanford Health: 6.7% to 8.6%; Aetna/CVS: 3.6% to 5.6%; BCBS Minnesota: 0.1% to 0.2%.Sep 2025Sep 2026Medica 35.2%61.2% MedicaBCBS Michigan 39.3%12.5% BCBS MichiganUnitedHealthcare 11.8%11.9% UnitedHealthcareSanford Health 6.7%8.6% Sanford HealthAetna/CVS 3.6%5.6% Aetna/CVSBCBS Minnesota 0.1%0.2% BCBS Minnesota
Carrier share, Sep 2025 to Sep 2026Slope chart comparing Sep 2025 with Sep 2026. Medica: 35.2% to 61.2%; BCBS Michigan: 39.3% to 12.5%; UnitedHealthcare: 11.8% to 11.9%; Sanford Health: 6.7% to 8.6%; Aetna/CVS: 3.6% to 5.6%; BCBS Minnesota: 0.1% to 0.2%.Sep 2025Sep 2026Medica 35.2%61.2%Blue Cross 39.3%12.5%UHC 11.8%11.9%Sanford 6.7%8.6%Aetna 3.6%5.6%Blue Cross 0.1%0.2%
View the data table
Carrier share, Sep 2025 to Sep 2026: Sep 2025 and Sep 2026
NameSep 2025Sep 2026Change
Medica35.2%61.2%+26.0 pts
BCBS Michigan39.3%12.5%−26.8 pts
UnitedHealthcare11.8%11.9%+0.1 pts
Sanford Health6.7%8.6%+1.8 pts
Aetna/CVS3.6%5.6%+2.0 pts
BCBS Minnesota0.1%0.2%+0.1 pts

Contract file · Sep 2026. Employer group plans included.

Carrier share of Medicare Advantage members with a carrier label, North Dakota, September 2026
CarrierShare, Sep 2026Share, Sep 2025ChangeMembers
Medica61.2%35.2%+26.0 pts32,785
BCBS Michigan12.5%39.3%−26.8 pts6,688
UnitedHealthcare11.9%11.8%+0.1 pts6,385
Sanford Health8.6%6.7%+1.8 pts4,583
Aetna/CVS5.6%3.6%+2.0 pts2,996
BCBS Minnesota0.2%0.1%+0.1 pts83
HCSC/BCBS0.0%––16
Humana0.0%2.2%−2.1 pts12
All other carriers0.0%––0
Elevance/Anthem–0.0%––
HealthPartners–1.2%––

Insurer not assigned in CMS data: 0.6% of all members in Sep 2026, 0.6% in Sep 2025. Shares leave these members out. 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 North Dakota

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 North Dakota by individual Medicare Advantage members, September 2026
CountyMembers12-month changeLeading carrierLeader's share
Cass11,518+1.5%Medica50.9%
Burleigh8,244+2.3%Medica62.5%
Ward3,642+1.4%Medica82.0%
Grand Forks3,584−1.5%Medica45.0%
Morton3,326+2.1%Medica63.4%
Stutsman2,687+2.8%Medica82.0%
Stark1,920+3.3%Medica87.5%
Richland1,574+4.7%Medica47.8%
Williams1,167+3.7%Medica68.1%
Barnes1,092+7.0%Medica64.0%

Browse all counties.

Common questions

How many people have Medicare Advantage in North Dakota?

North Dakota had 54,554 members in September 2026, by the CMS county file (employer group plans included). Individual plans, which leave out employer group coverage, had 50,781 members in September 2026.

Is Medicare Advantage growing in North Dakota?

Enrollment is up 1.1% from Sep 2025 to Sep 2026, slower than the national 2.0%. Among individual plans, which leave out employer group coverage, enrollment is up 2.2% in the 12 months to September 2026.

Which carrier has the most Medicare Advantage members in North Dakota?

Medica leads with 61.2% of members who have a carrier label (contract file, September 2026). BCBS Michigan led a year earlier. UnitedHealthcare and Humana together hold 11.9%, down 2.0 points from Sep 2025. Shares leave out members whose contract has no carrier label: 0.6% of members.

Cite and download

Cite this page

Senior Deal Club Standards Desk. Medicare Advantage Enrollment in North Dakota, data as of September 2026. Source: CMS public enrollment files. https://www.seniordealclub.com/medicare-advantage/enrollment/states/north-dakota

Download North Dakota 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