Earlier this year, the low-cost, county-run health center in Ramapo where 82-year-old Dr. Lloyd Hamilton worked ran out of funding and closed down. Knowing that many of his patients lacked health insurance and would likely have nowhere else to turn, he decided to try to start his own office, one that would offer basic care for free. Against all odds — he did. In May, Hamilton opened Health Lifeline in Nyack. How can he afford not to charge patients a penny? For space, he uses a few rooms in an old convent; for supplies, he uses donated medical equipment; and for staff, he uses volunteer nurses and secretaries. As the rest of the country mired itself in an often-raucous debate over health care, an 82-year-old man in Rockland quietly set about doing what everyone else was only talking about: He treated those in need.