42 Worcester Business Journal | Book of Lists 2026 | wbjournal.com
F O C U S H E A LT H C A R E
Largest health insurers
Ranked by total Massachusetts members as of Dec. 31, 2025
Health insurer
Total Mass.
membership
Q4 2025/
(1)
Q4 2024 (1)
Share of
Mass. market
Q4 2025
For profit or
nonprofit?
Head of company/
year licensed or founded
1
WellSense Health Plan
100 City Square, Suite 200, Charlestown 02129
800-792-4355 • wellsense.org
632,953
623,646
28.14% Nonprofit
Ellen Ginman
president
1997
2
Blue Cross and Blue Shield of Massachusetts Inc. (2)
101 Huntington Ave., Suite 1300, Boston 02199
800-262-2583 • bluecrossma.org
480,494
496,650
21.36% Nonprofit
Sarah Iselin
president & CEO
1992
3
Tufts Health Public Plans Inc. (3)
1 Wellness Way, Canton 02021
617-972-9400 • tuftshealthplan.com
280,212
329,708
12.46% Nonprofit
Patrick Gilligan
CEO, Point32Health
1997
4
Mass General Brigham Health Plan
399 Revolution Drive, Somerville 02145
866-414-5533 • massgeneralbrighamhealthplan.org
242,634
230,254
10.79% Nonprofit
Steven Tringale
CEO
1986
5
Harvard Pilgrim Health Care Inc. (3)
1 Wellness Way, Canton 02021
617-509-1000 • harvardpilgrim.org
194,380
183,174
8.64% Nonprofit
Patrick Gilligan
CEO, Point32Health
1977
6
Fallon Health
1 Mercantile St., Suite 400, Worcester 01608
508-799-2100 • fallonhealth.org
144,902
127,844
6.44% Nonprofit
Manny Lopes
president & CEO
1977
7
Tufts Associated HMO Inc. (3)
1 Wellness Way, Canton 02021
617-972-9400 • tuftshealthplan.com
128,950
139,950
5.73% Nonprofit
Patrick Gilligan
CEO, Point32Health
1979
8
Health New England
1 Monarch Place, Suite 1500, Springfield 01144
413-787-4000 • healthnewengland.org
101,790
104,894
4.53% Nonprofit
Michael Treash
president
1985
9
UnitedHealthcare
P.O. Box 1459, Minneapolis, Minn. 55340 (4)
888-735-5842 • uhc.com
36,947
26,697
1.64% For profit
Tim Noel
CEO
1984
10
Aetna Health Inc.
151 Farmington Ave., Hartford, Conn. 06156
800-872-3862 • aetna.com
3,590
(5)
1,425 (5)
0.16% For profit
Steve Nelson
president
1987
11
Central Mass. Health LLC dba Mass Advantage
67 Millbrook St., Suite 423, Worcester 01606
844-918-0114 • massadvantage.com
1,487
2,361
0.07% Nonprofit
Sarah Latorre
president
2021
12
eternalHealth
31 Saint James Ave., Suite 950, Boston 02116
800-831-0735 • eternalhealth.com
709
709
0.03% For profit
Pooja Ika
founder & CEO
2019
Sources: Mass. Division of Insurance, insurer websites and press releases. Note: Florida-based Wellcare Health Plans and Conn.-based Connecticare of Massachusetts did not offer coverage to
Massachusetts residents during this time period. In April 2025, Commonwealth Care Alliance Mass. was acquired by Ohio-based CareSource; no memberships of this type were offered to Massachusetts
residents during this time period.
(1) Sum of closed network and preferred network Health Maintenance Organization memberships
(2) Including HMO Blue
(3) Part of Point32Health
(4) Headquarters address for UnitedHealth Group
(5) Based on sum of Aetna Health Inc.'s Connecticut and Pennsylvania corporations, which both have a market share in Massachusetts.
-Compiled by: Heide Martin, hmartin@nebusinessmedia.com
