Dr. Mehmet Oz, who is President Donald Trump’s nominee to lead the Centers for Medicare and Medicaid Services, may have “significantly underpaid his Social Security and Medicare taxes” in recent years,

Importantly, retirees that owe tax on Social Security income must make quarterly estimated payments to the Internal Revenue Service (IRS). Alternatively, retirees can request that a portion of their benefits be withheld by submitting a Form W-4V to their local Social Security office by mail or fax.

Senate Finance Committee Democratic tax staff who reviewed Mehmet Oz’s tax returns said the nominee to run the Centers for Medicare and Medicaid Services avoided paying some Medicare and Social Security taxes over three years.