President-elect Donald Trump on Friday nominated Dr. Marty Makary, a pancreatic surgeon at Johns Hopkins University who’s made controversial claims about Covid, as commissioner of the Food and Drug Administration.

Makary is the chief of Islet Transplant Surgery at Johns Hopkins, according to the university’s website. He also served in leadership at the World Health Organization Patient Safety Program and is a member of the National Academy of Medicine, which is part of the National Academies of Science, Engineering and Medicine. He’s also served as a public adviser to Paragon Health Institute, a conservative health care think tank, and regularly appears on Fox News.