What are the big 5 healthcare companies?
If “biggest” is measured by FY2025 revenue, five of the world's largest healthcare companies are UnitedHealth Group, McKesson, CVS Health, Cencora, and The Cigna Group. Healthcare rankings vary because the sector includes insurers, pharmaceutical distributors, pharmacies, manufacturers, hospitals, and medical-technology companies.
Answer
The largest healthcare companies depend heavily on how healthcare company is defined.
Healthcare is much broader than pharmaceuticals and medical devices. It includes health insurance, pharmacy services, pharmaceutical distribution, healthcare providers, drug manufacturers, medical-technology companies, and other healthcare services.
Using FY2025 revenue and the healthcare companies represented in the 2026 Fortune Global 500, five of the largest are:
• UnitedHealth Group
• McKesson
• CVS Health
• Cencora
• The Cigna Group
These companies represent different parts of the healthcare system.
UnitedHealth and Cigna have major health-benefits and healthcare-services operations. McKesson and Cencora operate large pharmaceutical distribution businesses, while CVS Health combines pharmacy, healthcare services, and health-benefits operations.
This is why a broad healthcare ranking looks very different from a ranking of pharmaceutical companies alone. Companies such as Eli Lilly, Pfizer, Roche, and Johnson & Johnson are major healthcare manufacturers but have lower total revenue than some insurers and pharmaceutical distributors.
A healthcare-company comparison should therefore always identify the metric and industry scope being used.
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