Wakefield Act - Amends the Public Health Service Act to: (1) extend by one year the length of time for which a grant may be awarded under the emergency medical services for children grant program, which allows the Secretary of Health and Human Services to make grants to states or schools of medicine to support projects to expand and improve emergency medical services for children who need treatment for trauma or critical care; and (2) authorize appropriations for such grant program for FY2010-FY2014.