Where to be seen for a dog bite?

My 20yo son recently moved to Portland and we don't have health insurance setup for him there yet (I'm out of state).

He got bit by a dog today walking home from the bus, and he said the dog belonged to an unhoused person, so vaccination status is questionable. It's not bad, but there are two puncture marks. He cleaned it and it Neosporin on it already.

If he goes to the ER, will they be able to have him apply for state insurance and have that cover the bill? He has a job and he's going to school, but he plans to remain in Portland long term.

Or, any recommendations on urgent care clinics that don't cost an arm and a leg?

I'm just trying to figure out the best course of action to make sure he gets whatever vaccinations/antibiotics he might need and I'm not sure how things work there.

TIA!