ObamaCare’s main vehicle for ending the autonomous, private delivery of medicine is the hospital-owned “accountable care organization.” The idea is to turn doctors into hospital employees and pay them flat rates that uncouple their income from how much care they deliver. (Ending the fee-for-service payment model is supposed to eliminate doctors’ financial incentives to perform extraneous procedures.)The Obama administration also imposes new costs on physicians who remain independent—for example, mandating that all medical offices install expensive information-technology systems.

The result? It is estimated that by next year, about 50% of U.S. doctors will be working for a hospital or hospital-owned health system. A recent survey by the Medical Group Management Association shows a nearly 75% increase in the number of active doctors employed by hospitals or hospital systems since 2000, reflecting a trend that sharply accelerated around the time that ObamaCare was enacted. The biggest shifts are in specialties such as cardiology and oncology