A steadfast figure in the anti-vaccine movement who has helped shape Health Secretary Robert F. Kennedy Jr.’s thinking on a possible link to autism has joined his department to work on a study examining the long-debunked theory, according to people familiar with the matter

The new analyst, David Geier, has published numerous articles in the medical literature attempting to tie mercury in vaccines to autism. In 2012, state authorities in Maryland found that he had been practicing medicine without a license alongside his father, Mark Geier, who was a doctor at the time

Maryland authorities also suspended Mark Geier’s medical license following claims that he endangered children with autism and exploited their parents[…]
David Geier’s involvement in government research heightens their fears that vaccine confidence could be further eroded[…]
David Geier is listed in the Department of Health and Human Services directory as a “senior data analyst.” News of his role in the agency was initially reported by The Washington Post[…]
In 2011, the Maryland Medical Board accused David Geier of practicing medicine without a license alongside his father at a Rockville, Md., clinic for children with autism

One mother of a 10-year-old boy with autism balked when David Geier reportedly ordered 24 different blood tests for her son

His father, Mark Geier, lost his medical license in 2012. Records in that case indicate that both father and son promoted a theory that thimerosal caused autism

State authorities found that the Geiers had offered treatment with puberty-blocking drugs. To some patients, they offered chelation[…]
Judges have rejected the Geiers’ efforts to serve as experts on vaccine safety in court. Records show that judges challenged the father-son team’s billings for hundreds of thousands of dollars related to services they provided as experts for a specialized vaccine injury court