National Transportation Safety Board Reauthorization Act This bill reauthorizes the National Transportation Safety Board (NTSB) for FY2019-FY2023. The NTSB may include any still image obtained from a video recorder for an accident, but must protect from public disclosure any information that readily identifies an individual, including a decedent. The bill permits the NTSB to release confidential information to the public to protect health and safety and may share information with certain protections. The NTSB must report to Congress explaining its methodology to prioritize and select recommendations included on the Most Wanted List. The Most Wanted List sets forth NTSB advocacy priorities. It is designed to increase awareness of, and support for, critical changes needed to reduce accidents and save lives. The bill also requires the NTSB to: (1) expand requirements for providing services to families of accident victims; and (2) review, every five years, its previously issued safety recommendations.