Nurses Patricia Wegener (left) and Susan Davis at Mercy Hospital can monitor the condition of a patient who is miles away via the hospital's technology. But some health insurers and analysts remain skeptical that telemedicine saves money. Alex Smith/KCUR hide caption

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Diagnosis by text or a phone call is often convenient and popular with patients. But is it good medicine? Apriori/iStockphoto hide caption

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UnitedHealthcare says it will cover doctors' visits by live video on smartphones, tablets and computers. Doctor On Demand hide caption

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Go Big Green! Dartmouth is testing the VGo robot to help diagnose concussions when neurologists aren't at the game. Mark Washburn/Courtesy of Dartmouth-Hitchcock hide caption

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Katherine Streeter for NPR

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