The chance to finish medical school early is attracting increased attention from students burdened with six-figure education loans: The median debt for medical school graduates in 2013 was $175,000, according to the Association of American Medical Colleges. This year, the combined cost of tuition and fees for a first-year medical student ranges from just over $12,000 to more than $82,000. Some medical school administrators and policymakers see three-year programs as a way to produce physicians, particularly primary-care doctors, faster as the new health-care law funnels millions of previously uninsured patients into the medical system.