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 Americans.

Trump is expected to make Matt Gaetz his attorney general and Marco Rubio his secretary of state, and place Tulsi Gabbard, Kristi Noem and Stephen Miller in key posts.