We went to ER with a head injury for my son, inste...

We went to ER with a head injury for my son, instead of seeing a DR, they asked if we have insurance. I provided Blue Cross Blue Shield card then they asked us to sit down, that someone will come. We are fortunate enough to have insurance but i'm disturbed that if someone comes to ER and have no insurance, are they going to deny services? I wish they take care of the people first and take the payment afterwards.