A few things on this (again, my opinion, and keep in mind that I don't start med school until August - i.e. limited views at best):
1. I hate everything about socialized medicine, government controlling reimbursement, Barack Obama, etc, but there's really nothing that says it will go nationwide yet. I tend to be on board with the extremists, but I'm not entirely sure it will go wide. Again, it could, but I'm not positive that it will.
2. I think if it does ... you'll really start to see some creative solutions from physicians. As soft spoken and unorganized as docs can be, I just really don't know if I can see this one flying. Granted, that justification has gotten us into a lot of crap, but I think that one could be the line in the sand.
3. As it's written, to my understanding, it only applies to docs who accept insurance. If you don't accept insurance, they can't force you to accept x % of their BS insurance. So, if the market allows for it (which I really think that when the other choice is DMV style health clinics ... it will), you could just be straight up cash, and allow patients to bill the insurance companies and try to collect themselves. Granted, the government could then counter and not let you renew your license if you don't accept x % of their insurance under ANY circumstances ... but at that point, wheww ... I don't even know???