What to know about Dr. Mehmet Oz, Trump's pick to lead 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.

Here's a look at a television doctor who became a politician and is now designated to lead an agency that touches nearly all Americans in some way.

Trained as a heart surgeon, Oz rose to prominence on Oprah Winfrey's leading daytime television show before spinning off his own series, “The Dr. Oz Show," in 2009.