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Medicare Advantage Enrollment Tracker

Highmark/BCBS Medicare Advantage Enrollment

In September 2026, Highmark/BCBS had 419,899 Medicare Advantage members, down 60,555 from September 2025. That is 1.2% of members with a carrier label, 11th among carriers. Its share edged down 0.2 points since September 2025.

Data as ofCMS contract file

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

    Carrier shares: all Medicare Advantage contracts, including employer group, from the CMS contract file. Share is of members with a carrier label. This file and the state file give different totals, so these shares do not apply to state or county member counts.

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

    Missing months: July 2023 and December 2023 are absent from the state and county file; July 2023 is absent from the contract file. Lines break at a gap. Nothing is filled or averaged across it. Year-over-year changes compare the same calendar month, so July 2023 and December 2023 cannot be compared.

  • Some contracts have no carrier name.
    Why this matters

    Insurer not assigned in CMS data: 0.6% of members in September 2026 (225,918), against 10.7% in January 2023. These are mostly retired contracts with no carrier label. Shares divide by members with a label so old and new months compare. When the unassigned bucket is above 3% in either month, treat share changes as rough.

  • Shares jump each January. Compare same months.
    Why this matters

    Counts and shares step at each January, when plan-year contracts and annual elections take effect. A 12-month change is mostly one January step plus drift. CMS posts January counts late, so compare November with February or March, not January alone.

By Senior Deal Club Standards Desk. Editorial policy. Methodology. Senior Deal Club is not affiliated with Medicare or any government agency. This page is educational. It counts members. It does not rate plans.

Highmark/BCBS did not lead any state and held under 20% in each state where it has 1,000 or more members.

Shares are of members whose contract has a carrier label, from the CMS contract file. The file includes employer group plans. Source: CMS, September 2026.

Highmark/BCBS at a glance

Share of labelled members

1.2%

down 0.2 percentage points vs September 2025

September 2026, rank 11 among carriers

Members

419,899

September 2026, contract file

States led

0

Areas where Highmark/BCBS had the most labelled members, September 2026

National share against nearby carriers

Highmark/BCBS and the carriers ranked just above and below it, January 2023 to September 2026.

Highmark/BCBS share of members

Percent of members with a carrier label, monthly

Contract file · September 2026
CMS contract file. Includes employer group plans. Share divides by members with a carrier label.
Highmark/BCBS share of membersLine chart, January 2023 to September 2026. Highmark/BCBS: 1.2% in September 2026. SCAN: 1.3% in September 2026. MHH Healthcare, L.P.: 1.1% in September 2026. Devoted Health: 1.5% in September 2026. Shaded bands mark months with no data.0%0.5%1%1.5%2023202420252026ABDevoted Health1.5%SCAN1.3%Highmark/BCBS1.2%MHH Healthcare, …1.1%
Highmark/BCBS share of membersLine chart, January 2023 to September 2026. Highmark/BCBS: 1.2% in September 2026. SCAN: 1.3% in September 2026. MHH Healthcare, L.P.: 1.1% in September 2026. Devoted Health: 1.5% in September 2026. Shaded bands mark months with no data.0%0.5%1%1.5%20232025ABDevoted1.5%SCAN1.3%Blue Cross1.2%MHH1.1%
  • Highmark/BCBS
  • SCAN
  • MHH Healthcare, L.P.
  • Devoted Health
  • Shaded: no data that month
  1. Note A: July 2023: No contract-file data for July 2023.
  2. Note B: January 2026: January step: plan-year contract changes move members between carriers. Shares jump in this month.
View the data table
Highmark/BCBS share of members: values by month
MonthHighmark/BCBSSCANMHH Healthcare, L.P.Devoted Health
Sep 20261.2%1.3%1.1%1.5%
Aug 20261.2%1.3%1.1%1.5%
Jul 20261.2%1.3%1.1%1.5%
Jun 20261.2%1.3%1.0%1.4%
May 20261.2%1.2%1.0%1.4%
Apr 20261.2%1.2%1.0%1.4%
Mar 20261.2%1.2%1.0%1.3%
Feb 20261.2%1.2%1.0%1.3%
Jan 20261.2%1.2%1.0%1.3%
Dec 20251.4%0.9%1.0%0.6%
Nov 20251.4%0.9%1.0%0.6%
Oct 20251.4%0.9%1.0%0.6%
Sep 20251.4%0.9%1.0%0.6%
Aug 20251.4%0.9%1.0%0.6%
Jul 20251.4%0.9%1.0%0.6%
Jun 20251.4%0.9%1.0%0.6%
May 20251.4%0.9%1.0%0.6%
Apr 20251.4%0.9%1.0%0.6%
Mar 20251.4%0.9%1.0%0.6%
Feb 20251.4%0.9%1.0%0.6%
Jan 20251.4%0.9%1.0%0.7%
Dec 20241.3%0.9%0.9%0.8%
Nov 20241.3%0.9%0.9%0.8%
Oct 20241.3%0.9%0.9%0.7%
Sep 20241.3%0.9%0.9%0.7%
Aug 20241.3%0.9%0.9%0.7%
Jul 20241.3%0.9%0.9%0.7%
Jun 20241.3%0.9%0.9%0.7%
May 20241.3%0.9%0.9%0.7%
Apr 20241.3%0.9%0.9%0.7%
Mar 20241.3%0.9%0.9%0.7%
Feb 20241.3%0.9%0.9%0.6%
Jan 20241.3%0.9%0.8%0.6%
Dec 20231.4%1.0%0.8%0.5%
Nov 20231.4%1.0%0.8%0.5%
Oct 20231.4%1.0%0.8%0.5%
Sep 20231.4%1.0%0.8%0.5%
Aug 20231.4%1.0%0.8%0.5%
Jul 2023––––
Jun 20231.4%1.0%0.8%0.5%
May 20231.4%1.0%0.8%0.5%
Apr 20231.4%1.0%0.8%0.5%
Mar 20231.4%1.0%0.8%0.4%
Feb 20231.4%1.0%0.8%0.4%
Jan 20231.4%1.0%0.8%0.4%

CMS contract file, September 2026. Share of members with a carrier label. Includes employer group plans.

Where Highmark/BCBS has members

States where Highmark/BCBS has 1,000 or more members, largest first. Share is of that state's labelled members in September 2026. Change is in percentage points since September 2025. States where a carrier is small may be missing: the data keeps each state's ten largest carriers and any carrier above 1%. A contract that serves several states carries one carrier label, so a carrier can show members in a state where it is not a local plan.

Highmark/BCBS members by state, September 2026
StateMembersShareRankChange since September 2025Note
Pennsylvania323,67919.8%2down 1.2 percentage points
New York37,1741.7%12down 1.6 percentage points
West Virginia18,1057.4%4down 3.5 percentage points
Delaware8,65910.4%3down 12.1 percentage points
Alabama3,2280.5%11no change
Virginia2,4490.4%7no change
Tennessee1,8380.2%11no change
Kansas1,6610.8%8no change
Kentucky1,6110.3%8no change

Gained or lost the lead

Leader by labelled members in each state, September 2025 against September 2026.

Highmark/BCBS did not gain or lose the lead in any state in the last 12 months.

Questions about Highmark/BCBS

How many people are in Highmark/BCBS Medicare Advantage plans?

419,899 members in September 2026, from the CMS contract file. The count includes employer group plans and is not limited to plans anyone can buy.

Is Highmark/BCBS gaining or losing Medicare Advantage members?

Its share of labelled members edged down 0.2 points between September 2025 and September 2026, from 1.4% to 1.2%. Members fell from 480,454 to 419,899. The data does not show why.

Where does Highmark/BCBS have the most members?

Pennsylvania (323,679, 19.8% of that state's labelled members), New York (37,174, 1.7% of that state's labelled members), and West Virginia (18,105, 7.4% of that state's labelled members) in September 2026.

Does this page show Highmark/BCBS plan prices or benefits?

No. It counts members and shares. For plan details, use the carrier or Medicare.gov. Senior Deal Club is not affiliated with Medicare or any government agency. This page is educational. It counts members. It does not rate plans.

Cite and download

Cite this page

Senior Deal Club Standards Desk. Highmark/BCBS Medicare Advantage Enrollment. Data as of September 2026. Source: CMS Medicare Advantage monthly enrollment, contract file. https://www.seniordealclub.com/medicare-advantage/enrollment/carriers/highmark-bcbs

Download CSV (all carriers by state)

See all carriers on the carrier overview. Read the methodology and our editorial policy.

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