Company lists · Data refreshed September 2026

Top 25 Medical insurance providers based in the United States

RevenueBase identified 664 company matches for medical insurance providers associated with the United States as of September 2026 and tracks 117,872 professional contacts across them, including 30,017 with verified work emails. Dallas is the largest hub.

This list covers company matches for medical insurance providers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built
664Companies
117,872Contacts tracked
30,017Verified emails
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The 25 largest medical insurance providers based in the United States

Ranked by team size
Top 25 of 664 company matches for medical insurance providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchIndianapolis, IN, United StatesHQ recorded Sep 17, 2026n/a18,559 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2Exact matchChicago, IL, United StatesHQ recorded Sep 17, 202610001+17,458 contacts →

Exact match

“Health Care Service Corporation serves nearly 23 million people across the United States through its portfolio of health benefit solutions.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3Exact matchMinnetonka, MN, United StatesHQ recorded Sep 17, 202610001+13,144 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4Exact matchIndianapolis, IN, United StatesHQ recorded Sep 17, 202610001+9,421 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5Exact matchColumbia, SC, United StatesHQ recorded Sep 17, 202610001+5,446 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6Exact matchPittsburgh, PA, United StatesHQ recorded Sep 17, 20261,001-5,0004,363 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7Exact matchBoston, MA, United StatesHQ recorded Sep 17, 20261,001-5,0003,507 contacts →

Exact match

“Blue Cross Blue Shield of Massachusetts is a community-focused, tax-paying, not-for-profit health plan headquartered in Boston.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8Exact matchPittsburgh, PA, United StatesHQ recorded Sep 17, 202610001+3,413 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9Exact matchCleveland, OH, United StatesHQ recorded Sep 17, 20261,001-5,0002,667 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Sep 17, 20261,001-5,0002,593 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11Exact matchBuffalo, NY, United StatesHQ recorded Sep 17, 20261,001-5,0001,847 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12Exact matchHarrisburg, PA, United StatesHQ recorded Sep 17, 20261,001-5,0001,770 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13Exact matchPortland, OR, United StatesHQ recorded Sep 17, 20265,001-10,0001,463 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14Exact matchHonolulu, HI, United StatesHQ recorded Sep 17, 20261,001-5,0001,311 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15Exact matchFargo, ND, United StatesHQ recorded Sep 17, 20261,001-5,0001,292 contacts →

Exact match

“Noridian Healthcare Solutions, LLC (Noridian) develops solutions for federal, state and commercial health care programs through a full suite of innovative offerings, including…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16Exact matchBuffalo, NY, United StatesHQ recorded Sep 17, 20261,001-5,0001,192 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17Exact matchAustin, TX, United StatesHQ recorded Sep 17, 2026501-1,0001,094 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18Exact matchLatham, NY, United StatesHQ recorded Sep 17, 20261,001-5,0001,090 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19Exact matchDetroit, MI, United StatesHQ recorded Sep 17, 2026501-1,000993 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20Exact matchAtlanta, GA, United StatesHQ recorded Sep 17, 2026201-500974 contacts →

Exact match

“NASCO empowers health plans to innovate, grow, and deliver better experiences through a comprehensive suite of healthcare technology solutions and services.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21Exact matchCanton, MA, United StatesHQ recorded Sep 17, 20261,001-5,000828 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22Exact matchWayne, PA, United StatesHQ recorded Sep 17, 20261,001-5,000717 contacts →

Exact match

“Imagine360 is an integrated health plan addressing one of the greatest challenges on behalf of self-funded employers: healthcare costs are harming the bottom line, they're…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23Exact matchFrederick, MD, United StatesHQ recorded Sep 17, 2026n/a652 contacts →

Exact match

“ESIC Corporation is a company based out of 38 S Market St, Frederick, MD, United States.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24Exact matchFort Worth, TX, United StatesHQ recorded Sep 17, 2026201-500626 contacts →

Exact match

“A family of companies providing a better level of innovative health coverage for people just like you.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25Exact matchVirginia Beach, VA, United StatesHQ recorded Sep 17, 2026n/a617 contacts →

Exact match

“Optima Health is now Sentara Health Plans.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

Showing 25 of 664 medical insurance providers based in the United States

See the full list, filter by size, metro and specialty, and access 30,017 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Medical insurance providers based in the United States at a glance

As of Sep 17, 2026
25.5%Verified-email coverage
177.5Average contacts per company
1-10Median size (employees)
2.3%Largest-city concentration · Dallas
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
336
11-50
158
51-200
76
201-500
33
501-1,000
18
1,001-5,000
25
5,001-10,000
5
10001+
11

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 664 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “medical insurance providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 30,017 professional contacts with verified work emails across the full matched dataset. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “medical insurance providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many medical insurance providers are there based in the United States?

RevenueBase identified 664 company matches for medical insurance providers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Anthem, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most medical insurance providers?

Dallas leads with 15 company records, followed by Tampa (13) and Atlanta (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 30,017 professional contacts with verified work emails tracked across these 664 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 SmartSearch, 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.