Accepting your premise, and assuming that Americans do not go into full revolt over the thing, I think it will morph into a patchwork of mooshed-together goulash of weird-ass programs that will require and demand ever more funding to produce goofball, unanticipated results of every description and defying anyone’s ability to predict. Agency after agency will spring up here, there, and everywhere, requiring more and more funding seemingly without end. Meanwhile, some sort of black market will gradually evolve, and I would suspect that great numbers of US doctors will retire or quit the business, and set up shop offshore in maybe the Bahamas, or Mexico. The US will experience tremendous shortages of doctors and personnel of all sorts, hospitals will close, and chaos of virtually unlimited scope will prevail in the healthcare system. Meanwhile, government will greedily capture more and more of the industry, converting it into a macabre Monty Python skit of fatal dimensions.
And don’t open the mail (”never received it”) or answer the phone. Phone ID exponential growth. No trespassing.