Just Wait till NZ gets the bill
Free health care in NZ! The guy is covered! Yay! Medivac choppers run 50K+ (pure unalloyed greed, but that is another story) plus hospital at the walk-in uninsured rates (unless NZ has a contract with the hospital, seems unlikely). Going to be a truly huge bill, this is after all America, land of astronomical medical prices for mediocre care. The lawyers are already salivating since obviously NZ will try not to pay up; New Zealanders are going to wish mom had popped the miscreant and save a lot of NZ cash.
Indeed, once the gravy train is recognized the guy will get all sorts of unexpected medical care ranging from proctological examinations, to mastectomies, just to bill at the full master list rates. Might end up better off if a lobotomy is thrown in after the chemo (using brand drugs, not generics); need the chemo after 72 cat scans in a row.