Are you sure about that?    There will always be the good doctors who will work as long as needed even under a salaried scheme.     Then there will be the bad doctors (in it for the wrong reasons) who will have to clock in more than they are currently.     Then there will be the doctors who will huff and puff about going to the U.S. to hang their shingle.    I say:  good riddance (and also "you'll be back...)

So the net effect may be far less drastic than you assume.