Years ago, two men with the last names of Hill and Burton created a bill which assists people with medical expenses, unable to pay them.
It’s only for people of limited financial means.
However, if you Google “Hill-Burton Act” or go to https://www.hrsa.gov/get-health-care/affordable/hill-burton/facilities.html you’ll find a gold mine of information about who qualifies, which facilities are obligated to provide free or reduced-cost health care and how to apply.