By Ahmed Aboulenein WASHINGTON (Reuters) -Dr. Mehmet Oz, the celebrity physician and former Republican U.S. Senate candidate nominated by President Donald Trump to oversee Medicare and Medicaid, is expected to field questions on Friday on industry ties that could create conflicts of interest.

WASHINGTON (Reuters) -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.

Mehmet Oz, President Donald Trump’s nominee to lead the Centers for Medicare and Medicaid Services, may have “significantly” underpaid Social Security and Medicare taxes in recent years, according to a memo by Democratic staff on the Senate Finance Committee seen by Bloomberg News.