Company lists · Data refreshed September 2026
Top 25 Self-insured health plan administrators worldwide
RevenueBase identified 1,479 self-insured health plan administrators worldwide as of September 2026 and tracks 50,714 professional contacts across them, including 18,965 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers self-insured health plan administrators 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 22, 2026. Country and city lists for self-insured health plan administrators 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.
The 25 largest self-insured health plan administrators worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,490 contacts → | ||||
Indirect evidence “CorVel is a nationally recognized claims management and managed care provider with over 30 years of experience in the industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,667 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 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,092 contacts → | ||||
Partial evidence “Staying healthy, becoming healthy or living with an illness.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,039 contacts → | ||||
Partial evidence “American Fidelity is more than an insurance company.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,311 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 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,192 contacts → | ||||
Partial evidence “At Meritain Health®, we know every health journey is different.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,038 contacts → | ||||
Partial evidence “Aetna is one of the nation's leading diversified health care benefits companies, serving approximately 18 million people with information and resources to help them make better…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,001 contacts → | ||||
Strong evidence “Trustmark is a national employee benefits company offering specialized expertise in voluntary benefits, self-funded health benefit plan design and administration, and employee…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 974 contacts → | ||||
Strong evidence “NASCO empowers health plans to innovate, grow, and deliver better experiences through a comprehensive suite of healthcare technology solutions and services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 956 contacts → | ||||
Strong evidence “Who We Are: Vidal Health partners with insurers, employers, and healthcare providers to make healthcare access simpler, faster, and more supportive for everyone involved.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 938 contacts → | ||||
Indirect evidence “At Benefitfocus, a Voya Financial business, our mission is simple: To improve lives with benefits.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 777 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 717 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 688 contacts → | ||||
Strong evidence “TASC (Total Administrative Services Corporation) is an award-winning nationwide administrator of tax-advantaged health benefits plans offering comprehensive services for Clients…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 652 contacts → | ||||
Indirect evidence “ESIC Corporation is a company based out of 38 S Market St, Frederick, MD, United States.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 648 contacts → | ||||
Strong evidence “Plum is creating the new standard of insurance & health benefits.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 620 contacts → | ||||
Strong evidence “Allstate Benefits offers a broad portfolio of Group Supplemental workplace benefits and the services to support them, as well as Group Health Self-Funded Program options for…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 607 contacts → | ||||
Strong evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 520 contacts → | ||||
Strong evidence “TRISTAR began as an insurance program manager and medical malpractice claims administrator in 1987.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 465 contacts → | ||||
Strong evidence “About Northwest Administrators, Inc.(NWA) Since 1958, Northwest Administrators, Inc.(NWA) has delivered trusted, high-quality employee benefit plan administration and benefit…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 440 contacts → | ||||
Strong evidence “Luminare Health is one of the largest third-party benefits administrators in the nation, delivering comprehensive benefits solutions that help self-funded employers control…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 439 contacts → | ||||
Partial evidence “Colonial offers solutions to the two biggest challenges that business owners and Human Resource Representatives face today; the spiraling out of control cost of health care and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 423 contacts → | ||||
Indirect evidence “Olá, somos a Qualirede, nós prestamos serviços para planos de saúde!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 402 contacts → | ||||
Strong evidence “ConnectiCare is a leading health plan in the state of Connecticut.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 362 contacts → | ||||
Indirect evidence “Benefit challenges facing employers today are extremely complex.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: self-insured health plan administrators. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names self-insured health plan administrators.
- Partial evidence
- Its own public description names part of self-insured health plan administrators, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name self-insured health plan administrators. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 1,479 self-insured health plan administrators worldwide
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Self-insured health plan administrators worldwide at a glance
As of Sep 22, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 self-insured health plan administrators, 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
- Every country. Country and city lists for self-insured health plan administrators are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “self-insured health plan administrators”. 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 self-insured health plan administrators), 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 self-insured health plan administrators, 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, 18,965 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 22, 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.
Self-insured health plan administrators by location
3 lists · largest firstEvery Self-insured health plan administrators 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 self-insured health plan administrators, 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 self-insured health plan administrators are there worldwide?
RevenueBase identified 1,479 self-insured health plan administrators 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?
Corvel Corporation, headquartered in Irvine, tops this list with the largest team on record.
Which country has the most self-insured health plan administrators?
The United States leads with 825 companies, followed by Brazil (283) and Canada (26). Every self-insured health plan administrators list by country and city is linked on this page.
Which city has the most self-insured health plan administrators?
Sao Paulo leads with 88 headquartered companies, followed by Rio De Janeiro (34) and Belo Horizonte (18).
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 18,965 verified decision-maker contacts tracked across these 1,479 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 22, 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.