Company lists · Data refreshed September 2026

Top 25 Health plan administrators based in the United States

RevenueBase identified 1,994 health plan administrators headquartered in the United States as of September 2026 and tracks 321,027 professional contacts across them, including 75,988 with verified work emails. Dallas is the largest hub.

This list covers health plan administrators 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 20, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review
1,994Companies
321,027Contacts tracked
75,988Verified emails
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The 25 largest health plan administrators based in the United States

Ranked by team size
Top 25 of 1,994 health plan administrators based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to health plan administrators: 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
1Partial evidenceEden Prairie, NV, United StatesHQ checked Sep 20, 202610001+68,350 contacts →

Partial evidence

“UnitedHealth Group is a health care and well-being company with a mission to help people live healthier lives and help make the health system work better for everyone.”

Source: RevenueBase Database · checked Sep 20, 2026
2Partial evidenceBloomfield, CT, United StatesHQ checked Sep 20, 202610001+24,784 contacts →

Partial evidence

“We are a health benefits provider that advocates for better health through every stage of life.”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 20, 2026n/a18,559 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
4Partial evidenceChicago, IL, United StatesHQ checked Sep 20, 202610001+17,458 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceMadison, WI, United StatesHQ checked Sep 20, 202610001+17,111 contacts →

Indirect evidence

“For more than 90 years, American Family Insurance has built its reputation on sound principles.”

Source: RevenueBase Database · checked Sep 20, 2026
6Partial evidenceMinnetonka, MN, United StatesHQ checked Sep 20, 202610001+13,144 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
7Partial evidenceIndianapolis, IN, United StatesHQ checked Sep 20, 202610001+9,421 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
8Partial evidenceWestminster, CO, United StatesHQ checked Sep 20, 202610001+9,366 contacts →

Partial evidence

“Sagility is a U.S-based, tech-enabled healthcare business process management company that supports payers, providers, and their partners to deliver best-in-class operations…”

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceColumbia, SC, United StatesHQ checked Sep 20, 20261,001-5,0007,742 contacts →

Indirect 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 20, 2026
10Indirect evidenceColumbia, SC, United StatesHQ checked Sep 20, 202610001+5,446 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
11Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 20, 202610001+5,277 contacts →

Partial evidence

“At AmeriHealth Caritas, we’re passionate about helping people get care, stay well, and build healthy communities.”

Source: RevenueBase Database · checked Sep 20, 2026
12Partial evidenceMaryland Heights, MO, United StatesHQ checked Sep 20, 20261,001-5,0004,732 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
13Partial evidenceDayton, OH, United StatesHQ checked Sep 20, 20261,001-5,0004,429 contacts →

Partial evidence

Health Care with Heart.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 20, 20261,001-5,0004,363 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceIrvine, CA, United StatesHQ checked Sep 20, 20261,001-5,0003,490 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 20, 2026
16Partial evidenceAtlanta, GA, United StatesHQ checked Sep 20, 20265,001-10,0003,478 contacts →

Partial evidence

“OneDigital’s team of fierce advocates helps businesses and individuals achieve their aspirations of health, success and financial security.”

Source: RevenueBase Database · checked Sep 20, 2026
17Partial evidencePittsburgh, PA, United StatesHQ checked Sep 20, 202610001+3,413 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
18Partial evidenceShelton, CT, United StatesHQ checked Sep 20, 2026n/a3,115 contacts →

Partial evidence

HealthPlanOne is the friendliest company that helps millions make healthcare choices.”

Source: RevenueBase Database · checked Sep 20, 2026
19Indirect evidenceGrapevine, TX, United StatesHQ checked Sep 20, 2026n/a2,876 contacts →

Indirect evidence

“USHEALTH Advisors is a wholly-owned national sales and distribution subsidiary of USHEALTH Group, Inc.”

Source: RevenueBase Database · checked Sep 20, 2026
20Partial evidenceCleveland, OH, United StatesHQ checked Sep 20, 20261,001-5,0002,667 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 20, 2026
21Partial evidenceNew York, NY, United StatesHQ checked Sep 20, 20261,001-5,0002,593 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
22Partial evidenceBirmingham, AL, United StatesHQ checked Sep 20, 20261,001-5,0002,420 contacts →

Partial evidence

“Blue Cross and Blue Shield of Alabama is the largest provider of healthcare benefits in Alabama, providing coverage to more than 2.9 million people in Alabama and other areas of…”

Source: RevenueBase Database · checked Sep 20, 2026
23Indirect evidenceOklahoma City, OK, United StatesHQ checked Sep 20, 20261,001-5,0002,039 contacts →

Indirect evidence

“American Fidelity is more than an insurance company.”

Source: RevenueBase Database · checked Sep 20, 2026
24Strong evidenceBuffalo, NY, United StatesHQ checked Sep 20, 20261,001-5,0001,847 contacts →

Strong 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 20, 2026
25Indirect evidenceHarrisburg, PA, United StatesHQ checked Sep 20, 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 20, 2026

Showing 25 of 1,994 health plan administrators based in the United States

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Health plan administrators based in the United States at a glance

As of Sep 20, 2026
23.7%Verified-email coverage
161.0Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · Dallas
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
949
11-50
583
51-200
234
201-500
85
501-1,000
44
1,001-5,000
61
5,001-10,000
12
10001+
21

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 1,994 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 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.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “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 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 health plan administrators, 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, 75,988 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 20, 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.

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 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 health plan administrators are there based in the United States?

RevenueBase identified 1,994 health plan administrators 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?

Unitedhealth Group, headquartered in Las Vegas, tops this list with the largest team on record.

Which city has the most health plan administrators?

Dallas leads with 28 headquartered companies, followed by Houston (28) and Miami (25).

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 75,988 verified decision-maker contacts tracked across these 1,994 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 20, 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.