Company lists · Data refreshed September 2026

Top 25 Group health insurance providers worldwide

RevenueBase identified 3,491 group health insurance providers worldwide as of September 2026 and tracks 153,316 professional contacts across them, including 46,231 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers group health insurance providers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026. Country and city lists for group health insurance providers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
3,491Companies
153,316Contacts tracked
46,231Verified emails
0Mobile numbers
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The 25 largest group health insurance providers worldwide

Ranked by team size
Top 25 of 3,491 group health insurance providers worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to group health insurance providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 16, 2026n/a18,559 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
2Partial evidenceMinnetonka, MN, United StatesHQ checked Sep 16, 202610001+13,144 contacts →

Partial evidence

“When it comes to your health, everything matters.”

Source: RevenueBase Database · checked Sep 16, 2026
3Strong evidenceColumbia, SC, United StatesHQ checked Sep 16, 20261,001-5,0007,742 contacts →

Strong evidence

“Colonial Life & Accident Insurance Company, a subsidiary of Unum Group, provides financial protection benefits to America’s workers and their families when the unexpected happens.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceColumbia, SC, United StatesHQ checked Sep 16, 202610001+5,446 contacts →

Indirect evidence

“For more than six decades, BlueCross BlueShield of South Carolina has been part of the national landscape.”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 16, 20261,001-5,0004,363 contacts →

Indirect evidence

“How can we best serve our members and the community?”

Source: RevenueBase Database · checked Sep 16, 2026
6Partial evidenceAtlanta, GA, United StatesHQ checked Sep 16, 20265,001-10,0003,478 contacts →

Partial evidence

“OneDigital’s team of fierce advocates helps businesses and individuals achieve their aspirations of health, success and financial security.”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidencePittsburgh, PA, United StatesHQ checked Sep 16, 202610001+3,413 contacts →

Partial evidence

“A national blended health organization, Highmark Health and our leading businesses support millions of customers with products, services and solutions closely aligned to our…”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceGrapevine, TX, United StatesHQ checked Sep 16, 2026n/a2,876 contacts →

Partial evidence

“USHEALTH Advisors is a wholly-owned national sales and distribution subsidiary of USHEALTH Group, Inc.”

Source: RevenueBase Database · checked Sep 16, 2026
9Strong evidenceCleveland, OH, United StatesHQ checked Sep 16, 20261,001-5,0002,667 contacts →

Strong evidence

“Founded in 1934, Medical Mutual is the oldest and one of the largest health insurance companies based in Ohio.”

Source: RevenueBase Database · checked Sep 16, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 16, 20261,001-5,0002,593 contacts →

Partial evidence

“EmblemHealth is one of America’s largest not-for-profit health insurers.”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceBirmingham, AL, United StatesHQ checked Sep 16, 20261,001-5,0002,420 contacts →

Partial evidence

“Blue Cross and Blue Shield of Alabama is the largest provider of healthcare benefits in Alabama, providing coverage to more than 2.9 million people in Alabama and other areas of…”

Source: RevenueBase Database · checked Sep 16, 2026
12Partial evidencePhoenix, AZ, United StatesHQ checked Sep 16, 20261,001-5,0002,168 contacts →

Partial evidence

“Blue Cross ® Blue Shield ® of Arizona (AZ Blue) is committed to helping Arizonans get healthier faster and stay healthier longer.”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceTunbridge Wells, United KingdomHQ checked Sep 16, 20261,001-5,0002,043 contacts →

Indirect evidence

“We’re here to help you bring out your best self.”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceOklahoma City, OK, United StatesHQ checked Sep 16, 20261,001-5,0002,039 contacts →

Partial evidence

“American Fidelity is more than an insurance company.”

Source: RevenueBase Database · checked Sep 16, 2026
15Partial evidenceBuffalo, NY, United StatesHQ checked Sep 16, 20261,001-5,0001,847 contacts →

Partial evidence

“As one of Western New York's first HMOs, Independent Health covers approximately people here and across the country with more than 100 plans, services and products.”

Source: RevenueBase Database · checked Sep 16, 2026
16Strong evidenceMumbai, IndiaHQ checked Sep 16, 20261,001-5,0001,818 contacts →

Strong evidence

“At Manipal Cigna Health Insurance, we resonate with your commitment to your family’s health and well-being through a range of comprehensive Health Insurance plans.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceHarrisburg, PA, United StatesHQ checked Sep 16, 20261,001-5,0001,770 contacts →

Indirect evidence

“At Capital Blue Cross, we promise to go the extra mile for our team and our community.”

Source: RevenueBase Database · checked Sep 16, 2026
18Strong evidenceGurgaon, IndiaHQ checked Sep 16, 20261,001-5,0001,720 contacts →

Strong evidence

“HDFC ERGO Health Insurance Ltd.”

Source: RevenueBase Database · checked Sep 16, 2026
19Partial evidencePortland, OR, United StatesHQ checked Sep 16, 20265,001-10,0001,463 contacts →

Partial evidence

“Regence is part of a family of regional health plans that have been a symbol of strength and stability in local communities for more than 100 years.”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidenceBarueri, BrazilHQ checked Sep 16, 20261,001-5,0001,349 contacts →

Indirect evidence

“Há mais de 30 anos, olhamos para o futuro e, por isso, somos uma das maiores operadoras de saúde premium do mundo.”

Source: RevenueBase Database · checked Sep 16, 2026
21Partial evidenceHonolulu, HI, United StatesHQ checked Sep 16, 20261,001-5,0001,311 contacts →

Partial evidence

“The Hawaii Medical Service Association (HMSA), an independent licensee of the Blue Cross and Blue Shield Association, is a reliable name in Hawaii health care.”

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceBuffalo, NY, United StatesHQ checked Sep 16, 20261,001-5,0001,192 contacts →

Partial evidence

“At Meritain Health®, we know every health journey is different.”

Source: RevenueBase Database · checked Sep 16, 2026
23Indirect evidenceStuttgart, GermanyHQ checked Sep 16, 202610001+1,164 contacts →

Indirect evidence

“Stell dir vor: Du hast jemanden an deiner Seite, um dich in allen Gesundheitsfragen zu beraten, dich zu begleiten und dich zu unterstützen – egal, ob privat oder im Job.”

Source: RevenueBase Database · checked Sep 16, 2026
24Strong evidenceAustin, TX, United StatesHQ checked Sep 16, 2026501-1,0001,094 contacts →

Strong evidence

“Curative is a leading healthcare services company that created and launched the first-of-its-kind employer-based health insurance plan.”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceLatham, NY, United StatesHQ checked Sep 16, 20261,001-5,0001,090 contacts →

Partial evidence

“Founded in 1984 as a physician-founded and guided health plan, CDPHP and its affiliates currently serve members in 29 counties throughout New York with a full family of products.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 3,491 group health insurance providers worldwide

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Group health insurance providers worldwide at a glance

As of Sep 16, 2026
30.2%Verified-email coverage
43.9Average contacts per company
1-10Median size (employees)
6.6%Largest-city concentration · Sao Paulo
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
2,031
11-50
905
51-200
320
201-500
98
501-1,000
42
1,001-5,000
54
5,001-10,000
12
10001+
11

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among group health insurance providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage
7 countries, largest first: the United States, Brazil, Canada, Germany, the United Kingdom, India, France. Country and city lists for group health insurance providers are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “group health insurance providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names group health insurance providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among group health insurance providers, and records with no verified work email.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 46,231 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Group health insurance providers by location

15 lists · largest first

Every Group health insurance providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names group health insurance providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many group health insurance providers are there worldwide?

RevenueBase identified 3,491 group health insurance providers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Anthem, INC, headquartered in Indianapolis, tops this list with the largest team on record.

Which country has the most group health insurance providers?

The United States leads with 2,352 companies, followed by Brazil (883) and Canada (93). Every group health insurance providers list by country and city is linked on this page.

Which city has the most group health insurance providers?

Sao Paulo leads with 231 headquartered companies, followed by Rio De Janeiro (94) and Houston (45).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 46,231 verified decision-maker contacts tracked across these 3,491 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.