The AMA intentionally limits the amount of doctors that can practice. If there is an intractable shortage it’s because 25% of the current practicing doctors like things the way they are.
Looks like this is not entirely true. Looks like Congress simply created bad regulations limiting the funding for residencies in the US. A simple formula could have been created to determine residency funded limits instead of a simple hard cap.
Healthcare is already melting down, for patients.