Company lists · Data refreshed September 2026
Top 25 Employer group health plans based in the United States
RevenueBase identified 1,954 employer group health plans headquartered in the United States as of September 2026 and tracks 80,318 professional contacts across them, including 31,001 with verified work emails. Houston is the largest hub.
This list covers employer group health plans headquartered in the United States, 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 19, 2026.
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 employer group health plans based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 10,841 contacts → | ||||
Partial evidence “Since our founding in 1848, Unum has been a leader in the employee benefits business through innovation, integrity and an unwavering commitment to our customers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 10,274 contacts → | ||||
Partial evidence “Alight is a leading benefits administration provider of health, wealth, leave and point solutions for many of the world’s largest organizations and over 30 million people.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 7,742 contacts → | ||||
Partial 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 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,667 contacts → | ||||
Partial 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 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,039 contacts → | ||||
Indirect evidence “American Fidelity is more than an insurance company.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,508 contacts → | ||||
Indirect evidence “Businessolver, founded in 1998, has spent more than two decades earning its place as a trusted partner in benefits administration technology.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,192 contacts → | ||||
Partial evidence “At Meritain Health®, we know every health journey is different.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,094 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 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,090 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 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 938 contacts → | ||||
Indirect evidence “At Benefitfocus, a Voya Financial business, our mission is simple: To improve lives with benefits.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 934 contacts → | ||||
Partial evidence “Inspira Financial is your devoted health, wealth, retirement, and benefits administrator.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 744 contacts → | ||||
Partial evidence “Keenan provides innovative insurance and financial solutions for schools, public agencies and health care organizations.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 686 contacts → | ||||
Indirect evidence “Set your business free by stripping away the complexities that hold it back.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 626 contacts → | ||||
Partial evidence “A family of companies providing a better level of innovative health coverage for people just like you.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 617 contacts → | ||||
Strong evidence “Optima Health is now Sentara Health Plans.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 586 contacts → | ||||
Partial evidence “PlanSource is a technology company that automates and simplifies every aspect of employee benefit programs, so employees and HR teams can make smarter, more confident benefits…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 549 contacts → | ||||
Indirect evidence “At USAble Life, we provide financial security and peace of mind for our customers by offering a wide range of benefits, including dental, life, accident, disability and more.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 460 contacts → | ||||
Indirect evidence “SKYGEN transforms dental and vision benefits management and administration with flexible technology and services that connect and change lives for the better.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 425 contacts → | ||||
Strong evidence “Gravie is one of the fastest growing health benefits companies, offering health plans that cover 100% of costs on the most common healthcare services.” Source: RevenueBase Database · checked Sep 19, 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: employer group health plans. 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 employer group health plans.
- Partial evidence
- Its own public description names part of employer group health plans, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name employer group health plans. 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 1,954 employer group health plans based in the United States
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Employer group health plans based in the United States at a glance
As of Sep 19, 2026Companies by employee count
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 1,954 companies.
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 employer group health plans, 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.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “employer group health plans”. 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 employer group health plans), 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 employer group health plans, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- 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, 31,001 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 19, 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.
Employer group health plans by metro
- Employer group health plans in Houston28
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 employer group health plans, 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 employer group health plans are there based in the United States?
RevenueBase identified 1,954 employer group health plans headquartered in the United States 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?
UNUM, headquartered in Chattanooga, tops this list with the largest team on record.
Which city has the most employer group health plans?
Houston leads with 28 headquartered companies, followed by Dallas (24) and San Diego (23).
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 31,001 verified decision-maker contacts tracked across these 1,954 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 19, 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.
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