A continuing wave of mergers among hospitals and clinics is raising questions about whether consolidation is leading to more efficient care or higher costs.
The proposed merger next month of the Fairview and HealthEast hospital systems is the latest in the Twin Cities to highlight a debate that's playing out across the country.
Hospitals argue that mergers help control costs because larger health systems can better operate efficiently, coordinate care for patients and reduce duplication of services.
Consolidation critics counter that bulked-up hospital systems have power to demand high prices from health insurers, which translate into higher premiums for employers and individuals.
"The question is: Are these efficiencies sufficiently robust to offset the potential downside from a merger, which has to do with less competition and the potential for increased prices?" said Stefan Gildemeister, the state's health economist, without commenting directly on the Fairview-HealthEast merger.
"Efficiencies are possible, but they're not guaranteed," Gildemeister said. "The economic literature is pretty robust, however, in showing that less competition, or more consolidation, generally leads to increases in prices."
In Minnesota, two thirds of hospitals in 2015 were affiliated with a larger health care system, up 19 percent from 2006, according to state figures. The state's consolidation trend dates back at least 20 years, with the most recent large merger in 2013 when Park Nicollet, which includes Methodist Hospital in St. Louis Park, merged into Bloomington-based HealthPartners, which is both a health insurance company and operator of hospitals and clinics.
Nationally, there have been 561 hospital mergers since 2010, and nearly half of hospital markets are highly concentrated, according to researchers writing last month in the Journal of the American Medical Association. They argued that federal agencies and states should do more to promote new health care competitors and change payment practices that are giving bigger organizations an edge.