America's Largest Health Insurers by Market Share 🩺

What We’re Showing

This graphic shows America’s largest health insurers, based on data from the American Medical Association.

Figures are as of 2023 and are based on the share of total U.S. enrollments.

Key Takeaways

• UnitedHealth Group, parent company of UnitedHealthcare, is the fourth-largest firm in the U.S. by revenues behind Walmart, Amazon, and Apple based on Fortune 500’s annual rankings.
• Elevance Health, one of America’s biggest health insurers, recently dropped plans to reduce anesthesia coverage over certain time limits following a backlash from medical professionals and the public.
• In 2017, CVS Health acquired Aetna for $69 billion, marking the biggest healthcare merger in U.S. history.
• Over the past two decades, consolidation in the U.S. health insurance industry has been shown to increase premiums as lower competition enables companies to exercise market power.