Leemore Dafny
Professor of business administration at Harvard Business School and professor of public policy at the Harvard Kennedy School, noted for research on health-care markets, competition, and insurer behavior.
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Feb 4, 2026 • 11min
NEJM Interview: Leemore Dafny on the implications of corporatization of the U.S. health insurance industry.
Leemore Dafny, a Harvard professor who studies health-care markets and insurer behavior, explores insurer corporatization. She defines consolidation and its drivers. She links insurer size to provider consolidation. She discusses antitrust limits and why removing insurers is impractical. She outlines policy ideas to boost competition and improve insurer performance.
