Dr. Mehmet Oz, the celebrity physician nominated by President Donald Trump to oversee Medicare and Medicaid, appears to have underpaid his U.S. Social Security and Medicare taxes in recent years, according to a memo by Democratic staffers on the Senate Finance Committee.

Warren also asks whether Oz might end up using the CMS post to make money by promoting the Ozempic weight-loss drug or by making moves that would increase revenue from a patent on a heart valve surgery he helped invent while he was a professor of cardiothoracic surgery at Columbia University's medical school.

Trump’s allegiance to Oz was further emphasized on Tuesday when the president announced he was nominating Oz’s son-in-law, John Jovanovic, to head the Export-Import Bank of the United States.

Dr. Mehmet Oz, the celebrity physician nominated by President Donald Trump to oversee Medicare and Medicaid, appears to have underpaid his social security and Medicare taxes in recent years, according to a memo drafted by Democratic staffers on the Senate Finance Committee.

President Donald Trump raised eyebrows with nominations political pundits thought had no chance of gaining Senate approval for confirmation. One, former Rep. Matt Gaetz, a Florida Republican and Trump’s original choice for attorney general,

Sen. Elizabeth Warren (D-Mass.) has written a letter to Mehmet Oz, asking him to make a series of commitments to avoid conflicts of interests ahead of his confirmation hearing Friday to lead the Centers for Medicare & Medicaid Services (CMS).

President Donald Trump's nominee to lead the agency overseeing Medicare should divest financial ties to healthcare and pharmaceutical companies that could benefit from his policy decisions, Democratic U.