Companies that link patients to physicians via smartphone and tablet technology are gaining popularity among health insurance companies that are seeking a less expensive way to get routine care to consumers via a virtual doctor visit. The best known of these companies are: Teladoc, Doctor on Demand, American Well and MDLive. They link patients who generally pay between $40 and $50 for consultations typically for routine conditions and ailments via webcam. Patients can see the physicians employed by these companies via smartphone, tablet or desktop computer. A new report from healthcare market research firm I.H.S. says video consultations will double over ...