Went to Hospitals of East Providence thinking it was an urgent care center, turns out the want $5K just for stepping foot in there. What are my options?

When I went in I asked how much I’d be charged and they said they didn’t know and that I’d be billed later but not to worry about it because they were in network with my insurance. I saw the doctor for literally all of 10 minutes and received a shot of some medication I could’ve bought via a prescription for < $5. This morning I received a bill, after a hospital adjustment and my insurance covering a portion, I am left with a balance due of $1,718. There’s no way I’m going to pay that amount.

What are my options to have this absolutely fucking ridiculous amount of reasonably adjusted? Is there a point to seeing a lawyer? What happens if I just don’t pay?