Robotic surgery, gene therapy, and deep brain stimulation are so-called "frontiers" of medicine. Now there's a new frontier--telemedicine. "Research firm IHS Markit estimates that telemedicine visits will soar from 23 million in 2017 to 105 million by 2022" (Associated Press, 2/6/19). By then, one in ten doctors' visits could be via telemedicine. This could be an understatement if practitioners, health systems, and investors keep discovering new ways to expand telemedicine's reach.