A landmark Harvard Medical School study, published in Annals of Internal Medicine in September 2025, has issued one of the clearest warnings yet about what happens when private equity firms take control of hospitals. The findings are grim: mortality rates rise, frontline staffing falls, and patient safety declines — especially in emergency departments (EDs) and intensive care units (ICUs).
While the study focuses on hospitals, its message echoes across the entire elder care system, from nursing homes to rehabilitation centers: when investment groups prioritize profit extraction over patient care, lives are lost.
Led by Dr. Zirui Song of Harvard Medical School, researchers analyzed more than a decade of Medicare data covering 100% of emergency and ICU admissions from 2009 to 2019. They compared 49 hospitals acquired by private equity firms to 293 control hospitals that remained independent.
The analysis covered over one million emergency visits and 121,000 ICU admissions at PE-owned hospitals versus six million ED visits and 760,000 ICU admissions at non-PE facilities.
Their method — a matched difference-in-differences design — allowed them to isolate changes that occurred after acquisition, separating normal time trends from the specific effects of private equity ownership.
The result:
The data showed that after PE takeovers, the most acutely ill patients faced greater risks as critical care teams were thinned out and resources diverted toward investor returns.
Private equity firms typically acquire hospitals through debt-heavy leveraged buyouts. The loans used to purchase the facilities are then placed on the hospitals’ own balance sheets — not the investors’. Once acquired, these firms often extract profits through:
This model creates a dangerous cycle: hospitals become financially hollowed out while owners walk away with guaranteed profits. The Harvard team found that patients were more likely to be transferred to other hospitals — often the sickest among them — after PE takeovers, suggesting facilities were shedding high-cost, high-risk cases.
Emergency rooms and ICUs depend on highly trained staff who make rapid, life-or-death decisions. When those teams are downsized or underpaid, response times lengthen, errors increase, and patient survival drops.
Even more troubling, the study found that ICU stays became shorter — not because patients improved faster, but because administrators pushed to discharge patients quickly to lower costs.
This mirrors a long pattern documented across healthcare sectors. Earlier research by Dr. Song’s group showed that private equity-owned hospitals increased profits by 27% by raising charges and shifting toward more profitable, commercially insured patients — all while outcomes worsened for Medicare beneficiaries.
In other words, the private equity model rewards speed, turnover, and margin — not recovery or dignity.
Private equity firms are not new to elder care. The collapse of HCR ManorCare, once one of the largest U.S. nursing home chains, followed years of dividend payments to its private equity owners. Studies have shown that PE-owned nursing homes have higher mortality rates, fewer staff, and more citations for neglect than their nonprofit or publicly held counterparts.
The Harvard study’s conclusions reinforce what families and investigators already see inside long-term care: financial engineering translates into human harm. The drive to maximize investor returns directly undermines the care of the elderly and vulnerable.
When profit outweighs patient safety, facilities cut staff, defer maintenance, and underreport injuries — all precursors to falls, bedsores, and wrongful deaths.
Families rarely know who actually owns the hospital or nursing home caring for their loved one. Ownership chains can run through multiple shell companies, making accountability complex. Still, there are practical steps families can take:
If you see understaffing, unexplained injuries, or a rapid decline after a transfer, act early. The same forces that hollow out hospital safety can be at play inside nursing homes and rehabilitation centers.
Dr. Song’s team described their results as a “definitive indictment” of the private equity model in healthcare. While proponents argue that investor oversight increases efficiency, the study’s nationwide scope leaves little room for doubt: financial engineering kills.
From emergency rooms to skilled nursing facilities, every cut to staffing or length of stay is a calculated financial move that puts patients last. The ripple effect is visible across the entire continuum of elder care — from ER triage to post-acute rehab.
As the United States faces growing demand for long-term care, the lesson is clear: transparency and accountability must come before profit.
Source: Harvard Medical School and Annals of Internal Medicine, September 2025.
Original: Harvard Study Exposes Deadly Toll of Private Equity Hospitals
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