NPI Number Lookup

Free National NPI Number Registry

Frequently Asked Questions

Q:  Why is my NPI being shared by NPINumberLookup?
A:  To simplify finding and providing NPI numbers. By HIPAA law, "Each covered health care provider [must] disclose its NPI, when
    requested, to any entity that needs the NPI to identify that health care provider in a standard transaction."
Q:  Am I required to obtain and make available my NPI when requested?
A:  Most likely, yes. NPIs and associated data are in the public domain.
Q:  Is it safe?
A:  Yes, it's the same data provided by the US government , just made a bit easier to search.
Q:  How often is the data updated?
A:  Data is refreshed weekly, as provided by NPPES.
Q:  Why is this site not password protected?
A:  NPIs and associated infomation are in the public domain.
Q:  How do you ensure that NPIs in your database are valid?
A:  CMS follows a version of the ISO standard Luhn algorithm. We verify all submissions at the time of entry using this algorithm.
Q:  I've heard that Medicare is has an NPI Registry. If so, why are you doing this?
A:  CMS has a publicly searchable NPI registry, but it is not as quick and easy as this registry.
    Also, lookups on this registry work well on most mobile devices.

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