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.
Who is Dr. Oz?
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.
The program aired for 13 seasons and made Oz a household name.