Trump's nomination of Dr Oz has raised eyebrows, as a history of big pharma financial ties and questionable science hangs over him.

"Not since the Wizard of Oz himself has there been a bigger fraud than this guy," said Brad Woodhouse, executive director of Protect Our Care, a Washington-based nonprofit focused on expanding access to quality healthcare,

Mehmet Oz, Trump's pick for the Centers for Medicare and Medicaid Services, owns healthcare stocks, promotes Medicare Advantage and criticizes the ACA.

President-elect Donald Trump has chosen Mehmet Oz, the celebrity physician and TV personality known as Dr. Oz, to be administrator of CMS.

Dr. Mehmet Oz previously ran for a Senate seat from Pennsylvania. CMS is one of the biggest agencies in the U.S. goverment, overseeing Medicare and Medicaid.

Mehmet Oz, a celebrity heart surgeon turned talk show host and lifestyle guru, is President-elect Donald Trump’s pick to run the Centers for Medicare and Medicaid Services, the massive federal health care bureaucracy that covers more than a third of Americans.

President-elect Donald Trump’s choice to run the sprawling government agency that administers Medicare, Medicaid, and the Affordable Care Act marketplace — celebrity doctor Mehmet Oz — recently held broad investments in health care,

Dr. Mehmet Oz, President-elect Donald Trump's pick to lead the Centers for Medicare and Medicaid Services, has a mandate from Trump to "take on the illness industrial complex" and to cut costs.