Coverage was provided this way until the late 1980s when Delta Dental of California won the bid for the Office of the Civilian Health and Medical Program of the Uniformed Services (OCHAMPUS) program. Delta Dental member companies agreed to share its provider data so the administration of this very large account could be centralized, with Delta Dental of California sharing the administrative income and risk. The OCHAMPUS program led to the creation of the National Provider File (NPF), which was made available for commercial accounts in 1990 via Delta USA – providing Delta Dental coverage to organizations with employees and subscribers located in multiple states.