Teladoc provides virtual telehealth services in all places medicine can be practiced, from the hospital to the home. Amid the coronavirus pandemic, telehealth has gotten a huge boost in usage and revenue. As a result, its stock has taken off, but investors should know that the adoption of this technology is still in its early innings. With an aging population and more people getting comfortable using at-home tech, this market leader has plenty of tailwinds to make a dent in a $175 billion market.