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NPI: FAQs

A list of Frequently Asked Questions (FAQs) was developed for the National Provider Identifier (NPI) project to address common questions and concerns of Medi-Cal providers.

For additional questions regarding NPI, contact the Telephone Service Center (TSC) at 1-800-541-5555. To view questions and answers, click on a category that best describes your needs:

To view questions and answers, click on a category that best describes your needs:

  1. General
    This category includes general questions about NPI, atypical providers, provider enrollment, taxonomy and subparts.
  2. Billing/Claims Processing
    This category includes FAQs about hard copy or electronic claim submission.
  3. NPI Application/National Plan and Provider Enumeration System (NPPES)
    This category includes FAQs about providers that are required to apply for an NPI.