70 percent of U.S. hospitals belong to chains. HCA led the merger wave. Here is the data.
Hospital system consolidation in the United States has accelerated since 1998. The promise that drove the merger wave, and the regulatory approvals that allowed it, was that scale would lower costs and improve quality. Two decades of MedPAC, AHRQ, KFF, and Health Affairs analysis tells a different story: prices rose, margins widened, quality moved sideways, and the markets that consolidated most became the markets where patients have the fewest alternatives.