They actually go to medical school and then specialize in podiatry (residency, interenship) if they so choose
Thats not true.
Orthopedists treat bones and muscles, but podiatrists treat foot ailments that include infections, skin diseases, neurological problems and other stuff I know nothing about.
So go to an orthopedist for bone problems, dermatologist for skin problems and a neurologist for neurological problems. That’s what people do for the rest of the body. What’s so special about feet?