So what are the negatives? This NYT article reads like a PR piece for medical tourism... What about malpractice insurance in Belgium/Poland and what happens if there are problems down the road with TFA's hip implant?
The ability to sue for millions of dollars is the one "advantage" of buying your medical care (or airplane tickets) in the US. We each need to decide how important that is to us.
That isn't necessarily true, as some states have caps on tort damages, and more corperations are lobying for similar caps/limits on civil restitution via state law: http://www.nytimes.com/2013/01/25/us/even-with-counsel-texas...
But that's a reason to choose Belgium over somewhere like Guatemala -- while you won't get the gift shop or valet parking, the quality of care is much more likely to be at the same level as in the US.