Well, first of all - the reason we are IN this situation is because of Federal Govt meddling with the markets, money, and cronyism/regulation. Reverse the trend of Govt destroying our middle class and the numbers you cite will be a lot smaller.

Secondly, they may not have "insurance" but they already receive subsidized health care in many cases from Medicaid or State programs.

Govt meddling in health care has encouraged the charities to move on, before the govt meddling was so intrusive there used to be all sorts of church hospitals and doctors, Shriners hospitals, etc. If the Federal govt took less of a role, we would see all those come back.

For who could be free when every other man's humour might domineer over him? - John Locke (2nd Treatise, sect 57)