If you go to an emergency room at a hospital which accepts Medicare (so, essentially all of them), you will be screened, and if in danger, medically stabilized (modulo difficult pregnancies in some states with anti-abortion laws, unfortunately).

I assume if you then fill paperwork out, they’d have your data - though I’m not sure why you’d agree to fill it out if you know you can’t pay, and that you’re just going to be discharged.