New research reveals private equity firms that acquire physician-owned medical practices appear to be imposing measures to squeeze out more profits.
After they were acquired by private equity firms, the clinics saw more patients and billed more for visits among a large, commercially insured population, according to a study published today in JAMA Health Forum by researchers at Oregon Health & Science University and other institutions.
Researchers examined a total of 578 physician practices specializing in dermatology, gastroenterology and ophthalmology that were acquired by private equity firms across the U.S. from 2016 to 2020.
“The reason this is of concern to patients and policymakers is that private equity is often driven by profit margins of 20% or more,” said senior author Jane M. Zhu, M.D., assistant professor of medicine (general internal medicine and geriatrics) in the OHSU School of Medicine. “To do that, they have to generate higher revenues or reduce costs. Increasing private equity in these physician practices may be a symptom of the continuing corporatization of health care.”
It’s not clear whether these practices hurt clinical outcomes for patients. However, the findings raise concerning parallels with the rapid growth of private equity acquisition of nursing homes and hospital systems.
“Private equity investment in nursing homes has been associated with an increase in short-term mortality and changes to staffing,” the authors write, citing previous research.
In the new study, researchers found an increase in the overall number of patients seen in these clinics. The study also reviewed commercial insurance claims data that showed an increased share of visits longer than 30 minutes, even though the complexity of cases remained similar to cases before acquisition.
“These billing patterns could mean more efficient documentation of services provided, or it could mean upcoding or up-charging insurance companies to make more money,” Zhu said.
She believes more evidence is needed about how private equity impacts practice patterns.
Policymakers are taking note of these trends.
In Oregon, for example, lawmakers have established a Health Care Market Oversight program to review proposed mergers, acquisitions and other business deals to ensure they meet the state’s goals around health equity, lower consumer costs, increased access and better care.
A recent estimate by the same study team found that approximately 5% of physicians are currently employed by private equity-owned practices. Researchers cited quality of care and patient satisfaction as key areas for future research as this trend continues.
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