September 24, 2008

Effective November 1, 2008, providers must enter their Medi-Cal registered National Provider Identifier (NPI) numbers on all Treatment Authorization Requests (TARs). Providers were notified in the September Medi-Cal Update that all Medi-Cal legacy numbers would be end-dated effective October 1, 2008. As a result, the TAR system can no longer accept Medi-Cal legacy numbers; therefore, TARs submitted with a legacy number will not be processed.

NPI numbers that are successfully registered with the Department of Health Care Services (DHCS) Provider Enrollment Division (PED) can be used for all past and future dates of service.

Questions regarding the NPI number registration process can be directed to the Telephone Service Center (TSC) at 1-800-541-5555.