Inside the marketplace for vaccine medical exemptions

“They’re very blatant,” said Dorit Reiss, a professor at UC Law San Francisco who studies vaccine law and policy.

The group’s founder and director is William Lionberger, a chiropractor who has been licensed to practice in California since 1981, and who once maintained a practice north of San Diego. According to public records, he has also served as a police officer in a town near Sedona. (Lionberger declined a request for an on-the-record interview, and the organization…