Rural Health Training Incentive Act - Authorizes the Secretary of Health and Human Services to: (1) award a three-year grant to the Washington, Wyoming, Alaska, Montana, and Idaho joint medical school to strengthen and expand programs to encourage health professionals to practice in rural areas; and (2) award grants (beginning in FY 2007) in other geographic areas to regional university and associated medical school partnerships that have at least a two-month old rural training program.