Standard Unique Health Identifier
for Health Care Providers
National Provider Identifier Standard
(as published in the Federal Register, January
23, 2004)
Regulation Effective Date: May 23, 2005
Compliance Date: May 23, 2007 for most covered
entities
(May 23, 2008 for small health plans)
Healthcare providers may apply for NPIs beginning
on,
but no earlier than, May 23, 2005.
Go to the National Plan and Provider Enumeration System web site 
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