Erin Fuse Brown is a professor of health services, policy, and practice at the Brown University School of Public Health and a member of the Journal’s Perspective Advisory Board. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. H. Rooke-Ley, S. Shah, and E.C. Fuse Brown. Medicare Advantage and Consolidation’s New Frontier — The Danger of UnitedHealthcare for All. N Engl J Med 2024;391:97-99.