National Childhood Brain Tumor Prevention Network Act - Amends the Public Health Service Act to require the Director of the Centers for Disease Control and Prevention (CDC) to establish, administer, and coordinate within the National Center for Environmental Health a National Childhood Brain Tumor Prevention Network to: (1) provide grants for research on the causes of and risk factors associated with childhood brain tumors; (2) assemble a panel of experts to provide ongoing guidance and recommendations on research funded by the Network, including on a common study design and standard protocols; and (3) designate a central laboratory to collect, analyze, and aggregate data with respect to research funded by the Network and to make such data and analysis available to researchers.