HCA Tops Lown's Ranking of Largest U.S. Health Systems
HCA Healthcare ended 2025 as the largest U.S. health system by hospital count, according to a Lown Institute analysis published Oct. 6 and reported by Becker's Hospital Review. The ranking is built on Lown's hospital ownership dataset, which tracks ownership of U.S. acute care and critical access hospitals from 2020 through 2025.
The dataset matters because hospital ownership in the U.S. is a moving target. Mergers, acquisitions, and divestitures reshape who controls which facilities every year, and counts can vary depending on how systems and definitions are drawn. Lown's approach offers a consistent way to measure scale over time rather than relying on self-reported figures.
For executives, investors, and policymakers, concentration at the top is the signal to watch. Large systems like HCA carry outsized influence over pricing, local market competition, and patient access. Tracking which players are growing, and how fast, helps clarify where consolidation is heading and which communities are most affected by it.
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