China will almost double the number of general doctors by 2020, trim its public sector and improve technology as it seeks to fix a health care system plagued by snarling queues and poor rural services, its main administrative authority has said.

China's fast-growing health care market is a magnet for global drug makers, medical device firms and hospital operators, all looking to take a slice of a health care bill expected to hit $1 trillion by 2020, according to McKinsey & Co.

"Health care resources overall are insufficient, quality is too low, our structures are badly organized and service systems fragmented. Parts of the public hospital system have also become bloated," China's State Council said in a five-year road map announced late Monday.