Dr. Mikhail Varshavski—Dr. Mike to his followers—started posting on social media to provide vetted health information with an easy-to-understand approach. Amid shifting recommendations from U.S. government agencies, “people are more confused than ever and looking for a trustworthy source,” says Varshavski, a family medicine physician with Chatham Family Medicine in Chatham, N.J. “We’ve been very effective in talking even to people who disagree.” He’s gained more than 14.5 million followers on