Doctors’ house calls are considered a thing of the past, but not in the appointment book of Dr. Carrol Frazier Landrum, an 88-year-old physician from Edwards, Mississippi. The good doctor will see you no matter who you are, where you are, or how much money you have — as long his 2007 Toyota Camry can deliver him to your location. But now his state’s medical board wants to see him gone. Dr. Landrum, a WWII veteran, was forced to make a change after crime drove him from his Edwards, Mississippi, office two years ago, and he couldn’t find another space...