These days, the list of things you can do with your phone is a long one. Now you can add visiting the doctor to that list. American Well is launching an app for iPhones, iPads and Android devices that can be used to connect with a doctor for a video-chat visit. A typical 10-minute visit costs $49. The telehealth company has been doing online health visits for years now, starting in Hawaii back in 2009. Teresa Myers, a physician in Copley, Ohio, said she has been doing online visits in her spare time for about a year now. “I can do almost everything on telehealth that I do in my traditional practice,” said Myers. American Well visits are available even when a regular doctor isn’t. The service is available 24 hours a day, seven days a week, in 45 states. (The service isn’t available in Texas, Oklahoma, Alabama, Alaska and Louisiana — states that haven’t sanctioned such doctor’s visits.)