The 5 Largest Health Insurance Companies in the World

This article will give you detailed information about the 5 largest insurance companies in the world. The importance of insurance to the welfare of various sectors in a country cannot be overemphasized. although the effectiveness of insurance companies should not be measured by their size, the size of their membership tells a lot about their effectiveness.

The 5 Largest Health Insurance Companies in the World

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The 5 largest health insurance companies in the world

The factor used here to pick the 5 biggest insurance companies, is the amount of membership. The best way to measure effectiveness is the presence of real results. The presence of increased membership from time to time reveals the result of consistency in customer satisfaction.

Top 10 largest health insurance companies by membership

These insurance companies control nearly 46% of the health insurance market in 2022.

They are found in this list because they offer basic health insurance products to individuals and companies that they serve. Among the services that these insurance companies offer are Medicaid and Medicare, dental insurance, and vision benefits.

The list below contains the world’s largest insurance companies


By the total number of members, Anthem is the second-largest medical insurance provider, having more than 45 million members. This company offers insurance services to large and small businesses, individuals, and Medicaid and Medicare markets in the United States.

At Anthem, you may find products with the BCBS name, but you will be buying from Anthem. This is because Anthem is part of the Blue Cross Shield Association.


If you are very acquainted with the insurance world, you must have heard of the name Aetna. This group was acquired by the CVS Health group. The company is now operated by CVS.

By membership, Aetna is now considered the third largest insurance company in the United States of America. It got most of these memberships from providing health insurance to employers and their employees in the private market.


Humana is considered the fifth largest insurance company in the United States according to the amount of membership that they possess.  This provider was founded in the year 1991, and it originally sold long-term care insurance before it then expanded into selling health insurance policies.

The company is not focused on serving the medicare market, with plans like the medicare advantage plans or supplemental plans available in every state.

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Cigna Corporation

Cigna is considered the fourth largest insurance company in the United States according to its number of members. This company has its headquarters in Bloomfield, Conn.,

Cigna offers health insurance and health services to lots of big companies all over the world. Apart from corporate health insurance policies and management, Cigna also offers plans like dental, behavioral health, vision, supplemental health, and Medicare/Medicaid benefits.

UnitedHealth Group

The name United Healthcare should ring a bell. UnitedHealthcare, part of UnitedHealth Group, is a very respected name in the Insurance world. it is one of the largest health insurance companies by the amount of its membership. This company offers a lot of insurance products from individual health insurance to full employer benefit plans for some of the biggest corporations in the world.

continuously, the policies of this company can be purchased in all 50 states of the United States of America. The headquarters of this company is in Minnetonka, Minn.

Largest major medical provider by state

Apart from the list above, we decided to put together a list of the largest insurance providers in the United States by their various locations to make your search easier.

The table below contains the rankings according to states;

State Company
Alabama Blue Cross Blue Shield of Alabama
Alaska Premera Blue Cross
Arizona Blue Cross Blue Shield of Arizona
Arkansas Arkansas Blue Cross Blue Shield
California Anthem Inc.
Colorado Anthem Inc.
Connecticut Anthem Inc.
Delaware Highmark
District of Columbia CareFirst
Florida GuideWell
Georgia Anthem Inc.
Hawaii Hawaii Medical Service Association
Idaho UnitedHealth Group
Illinois Health Care Service Corp.
Indiana Anthem Inc.
Iowa Wellmark Inc.
Kansas Centene Corp.
Kentucky Anthem Inc.
Louisiana UnitedHealth Group
Maine Anthem Inc.
Maryland CareFirst
Massachusetts Blue Cross Blue Shield of Massachusetts
Michigan Blue Cross Blue Shield of Michigan
Minnesota Blue Cross and Blue Shield of Minnesota
Mississippi Blue Cross & Blue Shield of Mississippi
Missouri Anthem Inc.
Montana Health Care Service Corp.
Nebraska UnitedHealth Group
Nevada UnitedHealth Group
New Hampshire Anthem Inc.
New Jersey Cigna Corp.
New Mexico Presbyterian Healthcare Services
New York UnitedHealth Group
North Carolina Blue Cross Blue Shield of North Carolina
North Dakota Blue Cross Blue Shield of North Dakota
Ohio Anthem Inc.
Oklahoma Health Care Service Corp.
Oregon PacificSource
Pennsylvania UPMC Health Plan
Rhode Island Blue Cross and Blue Shield of Rhode Island
South Carolina Blue Cross Blue Shield of South Carolina
South Dakota Wellmark Inc.
Tennessee Blue Cross Blue Shield of Tennessee
Texas Health Care Service Corp.
Utah Intermountain Healthcare
Vermont Blue Cross Blue Shield of Vermont
Virginia Anthem Inc.
Washington Molina Healthcare Inc.
West Virginia CVS Health
Wisconsin Anthem Inc.
Wyoming Blue Cross Blue Shield of Wyoming


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Health insurance company rankings by revenue

Apart from membership, another factor that determines the best health insurance in the USA is the amount of money that they are making.

The revenues of health insurance companies are generated through premiums, the volume of their policies, the services they render, and the number of businesses they operate with.

The table below explains the top insurance companies according to their revenue generated;

Rank Company Revenue
1 UnitedHealth Group $286 billion
2 Anthem $138 billion
3 Centene $126 billion
4 Kaiser Permanente $89 billion
5 Humana $83 billion
6 CVS Health $61 billion
7 HCSC $47 billion
8 Molina Healthcare $20 bill


What Does Health Insurance Cover?

The coverage of health insurers varies according to different factors and policies. According to the United States insurance plans, health insurance should  cover the following areas;

  • Ambulatory patient services
  • Emergency services
  • Hospitalization
  • Pregnancy, maternity, and newborn care
  • Mental health and substance use disorder services, including behavioral health treatment
  • Prescription drugs
  • Rehabilitative and habilitative services and devices
  • Laboratory services
  • Preventive and wellness services and chronic disease management
  • Pediatric services, including oral and vision care

Frequently Asked Questions

What Are the Top Five Largest Health Insurance Companies?

The top five largest health insurance companies are;

  • Anthem
  • Aetna
  • Cigna
  • Humana
  • United health group

These companies are not listed in their order or membership amounts

How Are Health insurance Companies Compared?

Health insurance companies are compared based on the following factors;

  • Their number of memberships’
  • Their revenue
  • Location

These are the major factors with which our classifications were made.

How Much Does Health Insurance Cost?

The average health insurance premium price for individuals varies according to different factors like

  • Types of company
  • Age
  • Plan type

Conclusively, I hope this article contains all the information you have been looking for concerning this topic. If you have any questions, please give us a comment below.

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