It was November 2004, and Dr. Paul Farmer had agreed to bring his world-renowned Partners in Health model to Rwanda, which was still reeling from the aftershocks of the genocide a decade earlier. Now here he was, with Rwandan health officials, to scout out a location for a hospital to serve the poorest of the poor. Farmer, who teaches at Harvard, was taken to Ruhengeri, in the country's northwest corner. But there was already a clean hospital there, with employees and even an X-ray machine. "No, no, no. You don't understand," Farmer recalls saying. "Find me the worst possible place in the country." So they took him to Rwinkwavu, a remote area two hours east of Kigali. Even Farmer - who works in the world's worst regions - was taken aback. There were no beds, no patients, no staff, no medical equipment. "It was abandoned, dirty and scary," Farmer says. There were 200,000 people in the district and not a single doctor. It was the perfect place for Farmer. In the summer of 2005, the doors opened at Rwinkwavu Hospital, which now sees 250 patients a day, some of them walking hours to get there. Farmer, [Dr. Michael Rich, who is Rwanda country director for Partners in Health], and their Rwandan counterparts have built a second hospital in an equally remote area of 200,000 - also without a single doctor - and built or renovated 19 health centers that feed patients to them. A third hospital is on the drawing board, designed by Harvard architecture students. Ultimately, they plan to expand rural medical services to the entire country. Now 20 years old, Partners in Health, with its emphasis on treating poverty as well as disease, has expanded to nine countries.