New research suggests that doctors who communicate online with their patients may not see a drop in office visits.New research suggests that doctors who communicate online with their patients may not see a drop in office visits.Uncle Sam wants you to email your doctor. A federal law passed in 2009 says that physicians have to start offering their patients online communication, or Medicare will start docking how much it pays them in the future.Some patients hope that having online access to their doctors will mean they can cut down on how often they have to go to the doctor's office. But fresh research suggests that patients with online access