Dr. Mehmet Oz, Donald Trump's pick to oversee Medicare and Medicaid, has evolved on health care policy over the years.

Oz has made his preference known for privatized Medicare, which could substantially disrupt the current system.

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

President-elect Donald Trump has tapped several TV personalities for key posts in his incoming administration, including Dr. Mehmet Oz to run the Centers for Medicare and Medicaid Services, an agency that oversees health coverage for 150 million people.

Trump will nominate the former Senate candidate to oversee major healthcare programs like Medicare, Medicaid, the Children’s Health Insurance Program (CHIP), and the Affordable Care Act.

If confirmed by the Senate, Oz would be responsible for the programs — Medicaid, Medicare and the Affordable Care Act — that more than half the country relies on for health insurance.

When drawing up a list of which Trump nominees are likely to spark confirmation fights on Capitol Hill, keep Mehmet Oz near the top.

President-elect Donald Trump has selected Dr. Mehmet Oz, a former talk show host, to run the Centers for Medicare and Medicaid Services.