(3) The name of this file, which identifies treatment (and non-treatment) providers was recently changed. It was formerly called the Substance Abuse Facility Information System (SAFIS). This change was made to highlight efforts to improve this inventory of specialty treatment providers. Improvements include: 1) identification of every location where specialty treatment is delivered, including many privately funded facilities that have been omitted in the past; 2) vertically and horizontally linking facilities that operate under the same business organization or public agency; 3) expanding the data on each facility record to include variables that can be used to efficiently draw representative samples (e.g. facility size).