When are providers required to bill Medi-Cal using their NPI on the new UB-04 claim form?
Effective December 17, 2007, DHCS only accepts either an NPI or a Medi-Cal provider number. Providers who are not ready to transition to using the NPI may continue to submit their Medi-Cal provider number until instructed otherwise. Atypical providers will continue to use their Medi-Cal provider number.