What are the top health insurance companies in the US 2024?

The 10 leading health insurance companies in the US wrote almost 57% of all policies in the market, according to the latest figures from the National Association of Insurance Commissioners (NAIC), with those in the top five accounting for 41%.

These providers offer basic health insurance products to individuals and businesses – along with other services that can include Medicaid and Medicare policies, long-term care insurance, dental coverage, and vision benefits.

These are the largest health insurance providers in the country ranked according to direct written premiums based on NAIC’s data.

1. UnitedHealth Group

Headquarters: Minnetonka, Minnesota
Direct written premiums: $195.4 billion
Market share: 14.47%
Memberships: 49.5 million
States available: Nationwide

A diversified health and well-being company, UnitedHealth Group’s core capabilities are clinical expertise, advanced technology, and data and health information.

UnitedHealth serves clients and consumers in the US and more than 130 other countries through two distinct platforms. UnitedHealthcare, which boasts a network of more than 1.3 million physicians and healthcare professionals and 6,500 hospitals, provides healthcare coverage and benefits, while Optum offers information and technology-enabled health services. The group invests more than $4 billion in technology and innovation and processes approximately 1.1 trillion transactions annually.

2. Kaiser Foundation

Headquarters: San Francisco, California
Direct written premiums: $107.8 billion
Market share: 7.98%
Memberships: 12.6 million
States available: All or parts of California, Colorado, Georgia, Hawaii, Maryland, Oregon, Virginia, Washington, Washington, D.C.

Kaiser Foundation Health Plan, Inc. operates as a non-profit healthcare organization. The organization provides budget-based plans, which can cover allergy, audiology, cardiology, dermatology, oncology, hospice, laboratory, nephrology, occupational therapy, pain management, pediatric rehabilitation, and pharmacy services. The insurer’s policies come with lower premiums and no deductibles and includes prescription drugs.

3. Elevance Health (formerly Anthem)

Headquarters: Indianapolis, Indiana
Direct written premiums: $93.8 billion
Market share: 6.95%
Memberships: More than 32 million
States available: California, Colorado, Connecticut, Georgia, Indiana, Kentucky, Maine, Missouri, Nevada, New Hampshire, New York, Ohio, Virginia, Wisconsin

Anthem changed its name to Elevance Health in June 2022. The health insurer provides medical, pharmaceutical, dental, behavioral health, long-term care, and disability plans through affiliated companies, including Anthem Blue Cross and Blue Shield, Empire BlueCross BlueShield in New York, Anthem Blue Cross in California, Wellpoint, and Carelon. Elevance Health boasts a network of 1.7 million doctors and hospitals in 14 states and is the largest for-profit managed health care company in the Blue Cross Blue Shield Association.

4. Centene

Headquarters: St. Louis, Missouri
Direct written premiums: $82.4 billion
Market share: 6.10%
Memberships: More than 26 million
States available: 29 states, including California, Florida, New York, and Texas – four of the largest Medicaid states

Centene Corporation, a Fortune 500 company, is a diversified, multinational healthcare firm providing a portfolio of services to government-sponsored healthcare programs, focusing on uninsured and underinsured individuals. It is currently the largest Medicaid managed care organization in the country.

Centene operates local health plans and provides a range of health insurance products. It also partners with other healthcare and commercial groups to offer specialty services, ranging from behavioral health, dental benefits, life and health, and pharmacy benefits management to care management software, correctional healthcare services, in-home health services, managed vision, specialty pharmacy, and telehealth services.

5. Humana

Headquarters: Louisville, Kentucky
Direct written premiums: $79.6 billion
Market share: 5.90%
Memberships: More than 20 million
States available: Nationwide

Humana’s cultural foundation is aligned with helping members achieve their best health by providing personalized, simplified, whole-person healthcare experiences. Recognizing that each person, family, and community’s healthcare needs continue to evolve, Humana creates innovative solutions and resources to help people live the healthiest lives on their terms – when and where they need it.

6. CVS Health

Headquarters: Woonsocket, Rhode Island
Direct written premiums: $74.3 billion
Market share: 5.51%
Memberships: More than 23 million (medical benefits)
States available: Nationwide

CVS Health is a healthcare innovation company, which aims to help people on their path to better health. It has more than 9,900 retail locations, nearly 1,100 walk-in medical clinics, a pharmacy benefits manager with about 100 million plan members, a diversified healthcare benefits company serving over 23 million medical members, a dedicated senior pharmacy care business serving more than one million patients per year, expanding specialty pharmacy services, and a standalone Medicare Part D prescription drug plan.

7. HCSC

Headquarters: Chicago, Illinois
Direct written premiums: $46.5 billion
Market share: 3.44%
Memberships: About 17 million
States available: Illinois, Montana, New Mexico, Oklahoma, Texas

Health Care Service Corporation (HCSC), a mutual legal reserve company, is the largest customer-owned healthcare insurance company in the US. The company offers a wide variety of life and health insurance products and related services through its affiliates and subsidiaries, including Dearborn Group, Dental Network of America, HCSC Insurance Service Company, Medecision, Availity, Prime Therapeutics, and TriWest Healthcare Alliance.

8. Cigna

Headquarters: Bloomfield, Connecticut
Direct written premiums: $34.1 billion
Market share: 2.53%
Memberships: More than 17 million
States available: Arizona, Colorado, Florida, Illinois, Kansas, Missouri, North Carolina, Tennessee, Utah, Virginia

Cigna’s insurance plans and products include healthcare insurance for individuals and families, dental insurance plans, Medicare plans, Medicare supplemental plans, other supplemental insurance, and international health insurance.

9. Molina Healthcare

Headquarters: Long Beach, California
Direct written premiums: $26.5 billion
Market share: 1.97%
Memberships: About four million

States available: Arizona, California, Florida, Idaho, Illinois, Kentucky, Massachusetts, Michigan, Mississippi, Ohio, Nevada, New Mexico, New York, South Carolina, Texas, Utah, Virginia, Washington, Wisconsin

Molina Healthcare, a Fortune 500 company, exclusively focuses on government-sponsored healthcare programs for qualified individuals and families. The company partners with state governments and serves as a health plan providing a wide range of quality healthcare services to individuals and families. It also offers a Medicare product and has been selected in many states to join in dual demonstration projects to manage the care for those eligible for Medicaid and Medicare.

10. Independence Health Group

Headquarters: Philadelphia, Pennsylvania
Direct written premiums: $22.8 billion
Market share: 1.69%
Memberships: More than eight million
States available: Southeastern Pennsylvania, 27 states through affiliates

Independence Health Group, along with its subsidiaries, serves clients in 27 states and the District of Columbia. A quarter of its customer network is based in southeastern Pennsylvania. The company serves various employer groups, from SMEs to national corporations. Among the services the insurer offers are commercial, Medicare and Medicaid coverage, pharmacy benefits management, workers’ compensation, and third-party benefits administration. The company is an independent licensee of the Blue Cross and Blue Shield Association.