Study explores how private equity acquisitions impact hospitals

Private equity investment in hospitals has grown substantially in the 21st century, and it accelerated in the years leading up the COVID-19 pandemic. Now a new study of short-term acute care hospitals acquired by private equity firms finds they not only have higher markups and profit margins, they’re also slower to expand their staffs.

In a study published in Health Affairs, a multi-institutional team of investigators led by Dr. Anaeze C. Offodile II, a nonresident scholar in the Center for Health and Biosciences at Rice University’s Baker Institute for Public Policy, the Gilbert Omenn Fellow at the National Academy of Medicine and an assistant professor of plastic and reconstructive surgery at The University of Texas MD Anderson Cancer Center, examined private involvement in short-term acute care hospitals and combed through proprietary databases to identify private equity transactions involving such hospitals between 2003 and 2017.

“Hospital spending accounts for one-third of U.S. health care expenditures, and there have been multiple news accounts of private equity investments in hospitals. But we know so little about how private equity acquisition influences hospitals’ finance and operations,” said Marcelo Cerullo, a surgical resident at Duke University Medical Center and the second author on the paper.

The researchers compared private equity-acquired hospitals to hospitals not involved in private equity deals using information drawn from Medicare cost reports and Area Health Resource Files. The study examined differences among private equity versus nonprivate equity hospitals in 2003 (before the acquisitions occurred) and 2017 (after the private equity deals were completed).

Over that period, private equity firms acquired 282 unique hospitals (some more than once) in leveraged buyouts in 36 different states. The study estimates that of all patient discharges in 2017, about 11% were from a hospital that had at one point been acquired by private equity. In 2003, hospitals that were subsequently acquired by private equity investors had higher charge-to-cost ratios, higher profit margins and comparable staffing ratios. However, post-acquisition in 2017, private equity-acquired hospitals had developed higher markups, even higher profit margins and saw slower rates of growth of staffing ratios. Notably, private equity-acquired hospitals had overall lower costs per each patient discharged.

“Our main findings highlight the overall solvency of private equity-acquired facilities, with strong baseline financial performance,” Offodile said. “Our results challenge the prevailing narrative of financially distressed institutions seeking infusion of outside private equity capital. Post-acquisition, these hospitals appeared to continue to boost profits by restraining growth in cost per patient, in part by limiting staffing growth.”

Hospitals acquired by private equity firms between 2003 and 2017 had operating margins that were 5.6 percentage points higher than nonprivate hospitals at the start of the period; that gap widened to 8.6 percentage points by 2017.

The authors also surveyed the press releases and industry-specific reports for private equity deals. Private equity firms often touted large capital investments that would maintain employment and commitments to the hospital’s central mission. “We found a mixed track record of investors keeping specific promises after acquisition,” Cerullo said. “Often, private equity firms would announce the dollar figure attached to renovations, new facilities, or give a time frame for staying open or maintaining raises.”

The study forms a foundation for future investigations into how private equity acquisitions change hospital operations and clinical quality, the authors said.

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