Picture it: You're not feeling well, so you go to your doctor's office, where you're told you're having a heart attack. And just as you're on an ambulance gurney, the receptionist asks you for a $5 co-pay! This is what happened to 76-year-old Staten Island resident Barbara Antonelli last month. Antonelli described her trip to the Staten Island Physician Practice and told the Staten Island Advance, "Stupid me, I gave her the five dollars. This......