Who: Farris Timimi
Occupation: Medical Director at the Rochester, Minn.-based Mayo Clinic Center for Social Media
Twitter handle: @farristimimi
Why you should follow him: Timimi is one the only people on this list who doesn't have a blog, but that hasn't stopped him from becoming a social media force. His work at Mayo Clinic focuses on helping providers adopt social media tools for health-related purposes, not just marketing purposes. "Our moral obligation is to meet [patients] where they're at and give them the information they need so they can seek recovery," Timimi said at the ninth annual World Health Care Congress in Washington, D.C. last April. "This is not marketing. This is the right thing to do."