Company lists · Data refreshed September 2026

Top 25 Hmo insurance companies worldwide

RevenueBase identified 260 hmo insurance companies worldwide as of September 2026 and tracks 166,960 professional contacts across them, including 21,812 with verified work emails and 0 with mobile numbers. The United States is the largest market and Lagos the largest hub.

This list covers hmo insurance companies 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 hmo insurance companies 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
260Companies
166,960Contacts tracked
21,812Verified emails
0Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest hmo insurance companies worldwide

Ranked by team size
Top 25 of 260 hmo insurance companies worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to hmo insurance companies: 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 evidenceOakland, CA, United StatesHQ checked Sep 16, 202610001+116,185 contacts →

Indirect evidence

“At the heart of health care, you’ll find Kaiser Permanente.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 16, 202610001+9,421 contacts →

Indirect evidence

“At Anthem Blue Cross and Blue Shield we understand our health connects us to each other.”

Source: RevenueBase Database · checked Sep 16, 2026
3Indirect evidenceBloomington, MN, United StatesHQ checked Sep 16, 202610001+6,161 contacts →

Indirect evidence

“HealthPartners, an integrated health care organization providing health care services and health plan financing and administration, was founded in 1957 as a cooperative.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect 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
5Partial 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
6Indirect evidenceRancho Cucamonga, CA, United StatesHQ checked Sep 16, 20261,001-5,0001,833 contacts →

Indirect evidence

“With a mission to heal and inspire the human spirit, Inland Empire Health Plan (IEHP) is one of the top 10 largest Medicaid health plans, the largest not-for-profit…”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect 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
8Indirect evidenceDowners Grove, IL, United StatesHQ checked Sep 16, 20261,001-5,0001,438 contacts →

Indirect evidence

“Are you ready to challenge the expected to deliver the extraordinary?”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceLatham, NY, United StatesHQ checked Sep 16, 20261,001-5,0001,090 contacts →

Indirect 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
10Indirect evidenceDetroit, MI, United StatesHQ checked Sep 16, 2026501-1,000993 contacts →

Indirect evidence

“HAP is now Health Alliance Plan by Henry Ford Health.”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceDetroit, MI, United StatesHQ checked Sep 16, 20261,001-5,000911 contacts →

Indirect evidence

“Meridian in Michigan’s (Meridian) mission is to continuously improve the quality of care in a low-resource environment.”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 16, 20261,001-5,000840 contacts →

Indirect evidence

“Regal Medical Group, Lakeside Community Healthcare, ADOC Medical Group, and Community Surgery Center of Glendale – part of the Heritage Provider Network – is recognized as one of…”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceCanton, MA, United StatesHQ checked Sep 16, 20261,001-5,000828 contacts →

Indirect evidence

“Harvard Pilgrim and its family of companies provide health benefit plans, programs and services to more than 3 million customers in New England and beyond.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceGuarulhos, BrazilHQ checked Sep 16, 20261,001-5,000722 contacts →

Indirect evidence

“Fundada em 19 de janeiro de 1994, a Unimed Guarulhos atua em Guarulhos, Arujá, Itaquaquecetuba, Ferraz de Vasconcelos e Santa Isabel e conta com rede de médicos, hospitais, pronto…”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceCaruaru, BrazilHQ checked Sep 16, 20261,001-5,000631 contacts →

Indirect evidence

“Somos a confiança que a sua vida precisa.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceSao Paulo, BrazilHQ checked Sep 16, 2026501-1,000602 contacts →

Indirect evidence

“Somos uma gestora de saúde com o foco em oferecer as melhores soluções em saúde para você, sua família ou empresa.”

Source: RevenueBase Database · checked Sep 16, 2026
17Partial evidenceDaytona Beach, FL, United StatesHQ checked Sep 16, 20261,001-5,000551 contacts →

Partial evidence

“Florida Health Care Plans is more than an insurance company.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceCulver City, CA, United StatesHQ checked Sep 16, 202610001+521 contacts →

Indirect evidence

“Established in 1996, Prospect Medical Holdings, Inc, is a national leader in fully integrated healthcare.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceBronx, NY, United StatesHQ checked Sep 16, 2026501-1,000512 contacts →

Indirect evidence

“The mission of Affinity by Molina Healthcare (formerly Affinity Health Plan) is to improve the health and lives of its members by delivering high-quality health care.”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidencePorto Alegre, BrazilHQ checked Sep 16, 20261,001-5,000509 contacts →

Indirect evidence

“Oferecer os melhores serviços na área da medicina de grupo.”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceMadison, United StatesHQ checked Sep 16, 2026501-1,000483 contacts →

Indirect evidence

“Group Health Cooperative of South Central Wisconsin (GHC-SCW) is a not-for-profit managed health care organization that provides the entire spectrum of health care services…”

Source: RevenueBase Database · checked Sep 16, 2026
22Indirect evidenceBuffalo, NY, United StatesHQ checked Sep 16, 2026501-1,000386 contacts →

Indirect evidence

“At Buffalo Medical Group, we offer care that goes beyond simply treating you when you’re sick.”

Source: RevenueBase Database · checked Sep 16, 2026
23Partial evidenceMiami, FL, United StatesHQ checked Sep 16, 2026201-500350 contacts →

Partial evidence

“Best Doctors Insurance is the leading international health insurance company in Latin America, the Caribbean and Canada.”

Source: RevenueBase Database · checked Sep 16, 2026
24Indirect evidenceOntario, CA, United StatesHQ checked Sep 16, 20261,001-5,000345 contacts →

Indirect evidence

“Calibrated Healthcare Network (CHN) manages over 11 million lives in over 8 states, partnering with industry leaders in the area of managed care.”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceMiami, FL, United StatesHQ checked Sep 16, 2026501-1,000342 contacts →

Partial evidence

“As a Florida, licensed health maintenance organization (HMO) and preferred provider organization (PPO), we offer health plans for people enrolled in Medicaid and/or Medicare…”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 260 hmo insurance companies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 21,812 reachable decision-makers.

Free signup · no credit card

View the full list →

Hmo insurance companies worldwide at a glance

As of Sep 16, 2026
13.1%Verified-email coverage
642.2Average contacts per company
51-200Median size (employees)
3.8%Largest-city concentration · Lagos
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
44
11-50
61
51-200
56
201-500
37
501-1,000
25
1,001-5,000
25
5,001-10,000
2
10001+
9

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 hmo insurance companies, 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
3 countries, largest first: the United States, Brazil, Nigeria. Country and city lists for hmo insurance companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “hmo insurance companies”. 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 hmo insurance companies), 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 hmo insurance companies, 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, 21,812 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.

Hmo insurance companies by location

3 lists · largest first

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

Countries

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 hmo insurance companies, 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 hmo insurance companies are there worldwide?

RevenueBase identified 260 hmo insurance companies 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?

Kaiser Permanente, headquartered in Oakland, tops this list with the largest team on record.

Which country has the most hmo insurance companies?

The United States leads with 157 companies, followed by Brazil (63) and Nigeria (40). Every hmo insurance companies list by country and city is linked on this page.

Which city has the most hmo insurance companies?

Lagos leads with 10 headquartered companies, followed by Miami (6) and Lagos State (5).

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 21,812 verified decision-maker contacts tracked across these 260 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.

Ready to reach these companies? Verified emails and direct dials for all 260 hmo insurance companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.