Company lists · Data refreshed September 2026

Top 25 Health insurance third party administrators based in the United States

RevenueBase identified 1,407 company matches for health insurance third party administrators associated with the United States as of September 2026 and tracks 79,049 professional contacts across them, including 24,673 with verified work emails. Dallas is the largest hub.

This list covers company matches for health insurance third party administrators 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 16, 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 16, 2026 How this list was built
1,407Companies
79,049Contacts tracked
24,673Verified emails
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The 25 largest health insurance third party administrators based in the United States

Ranked by team size
Top 25 of 1,407 company matches for health insurance third party administrators based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 matchColumbia, SC, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
2Exact matchMaryland Heights, MO, United StatesHQ recorded Sep 16, 20261,001-5,0004,732 contacts →

Exact match

“Magellan Health is a leader in managing the fastest growing, most complex areas of health.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchIrvine, CA, United StatesHQ recorded Sep 16, 20261,001-5,0003,490 contacts →

Exact match

“CorVel is a nationally recognized claims management and managed care provider with over 30 years of experience in the industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4Exact matchCleveland, OH, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
5Exact matchBuffalo, NY, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
6Exact matchFort Lauderdale, FL, United StatesHQ recorded Sep 16, 20261,001-5,0001,519 contacts →

Exact match

“Convey Health Solutions is a specialized healthcare technology and services company that is committed to providing clients with healthcare-specific, compliant member support…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7Exact matchMclean, VA, United StatesHQ recorded Sep 16, 20261,001-5,0001,421 contacts →

Exact match

“Acentra Health combines knowledge, clinical expertise, and technological ingenuity to modernize the healthcare experience for public and commercial partners and their priority…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchFishers, IN, United StatesHQ recorded Sep 16, 20261,001-5,0001,414 contacts →

Exact match

“Alacrity Solutions helps people and businesses recover after a disaster.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchColumbia, SC, United StatesHQ recorded Sep 16, 20261,001-5,0001,350 contacts →

Exact match

“You can’t reach new heights of performance unless you’re willing to invest in others.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10Exact matchHonolulu, HI, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
11Exact matchFargo, ND, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
12Exact matchDanville, IL, United StatesHQ recorded Sep 16, 20261,001-5,0001,276 contacts →

Exact match

“Since 1978, Cannon Cochran Management Services, Inc.(CCMSI) has set the gold standard as the leading boutique third-party administrator for property and casualty programs.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchBuffalo, NY, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
14Exact matchTampa, FL, United StatesHQ recorded Sep 16, 20261,001-5,0001,011 contacts →

Exact match

“Zenith American Solutions (“Zenith”) stands out as a top provider of third-party administration services specifically designed for Taft-Hartley trust funds in the U.S.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchAtlanta, GA, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
16Exact matchCharleston, SC, United StatesHQ recorded Sep 16, 20261,001-5,000938 contacts →

Exact match

“At Benefitfocus, a Voya Financial business, our mission is simple: To improve lives with benefits.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchSan Francisco, CA, United StatesHQ recorded Sep 16, 20261,001-5,000777 contacts →

Exact match

“Collective Health is the leading independent third party administrator (TPA) that brings together plan administration, cost management, and taking great care of your people-all in…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18Exact matchTorrance, CA, United StatesHQ recorded Sep 16, 2026501-1,000744 contacts →

Exact match

“Keenan provides innovative insurance and financial solutions for schools, public agencies and health care organizations.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19Exact matchLakewood, CO, United StatesHQ recorded Sep 16, 2026201-500734 contacts →

Exact match

“Eberl is a people-centric organization - powered by technology and driven by compassion for others.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchWayne, PA, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
21Exact matchRemote, United StatesHQ recorded Sep 16, 20265,001-10,000683 contacts →

Exact match

“Enlyte is a P&C industry leader, providing claims technology innovations and connectivity solutions, specialty networks, case management services, pharmacy benefit and disability…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchFrederick, MD, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
23Exact matchSan Antonio, TX, United StatesHQ recorded Sep 16, 2026501-1,000651 contacts →

Exact match

“A member of the Claim Assist Solutions Family of Brands, Allcat’s mission is to be the provider of choice for all insurance adjusting needs with a complete set of tech-enabled…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchVirginia Beach, VA, United StatesHQ recorded Sep 16, 2026n/a617 contacts →

Exact match

“Optima Health is now Sentara Health Plans.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchChicago, IL, United StatesHQ recorded Sep 16, 2026501-1,000607 contacts →

Exact match

“Founded in 1980, Allied Benefit Systems, LLC is the largest national independent Third-Party Administrator (TPA) in the U.S, serving over 14,500 self-insured employers.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

Showing 25 of 1,407 health insurance third party administrators based in the United States

See the full list, filter by size, metro and specialty, and access 24,673 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Health insurance third party administrators based in the United States at a glance

As of Sep 16, 2026
31.2%Verified-email coverage
56.2Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · Dallas
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
512
11-50
489
51-200
246
201-500
73
501-1,000
36
1,001-5,000
38
5,001-10,000
4
10001+
8

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 1,407 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 “health insurance third party administrators” 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 24,673 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 16, 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 “health insurance third party administrators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many health insurance third party administrators are there based in the United States?

RevenueBase identified 1,407 company matches for health insurance third party administrators 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?

Bluecross Blueshield Of South Carolina tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most health insurance third party administrators?

Dallas leads with 19 company records, followed by Houston (17) and Miami (17).

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 24,673 professional contacts with verified work emails tracked across these 1,407 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 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 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.