Late on Monday, 2 April 2007, CMS Clarified Guidelines for National Provider Identifier (NPI) Deadline Implementation. Their press release is located
hereShortly thereafter, CMS published Guidance on Compliance with the NPI Final Rule after 23 May 2007. That document is located
here And, for those of you who are (still) interested, the National Plan / Provider Enumeration System (NPPES) Data Dissemination Notice is still listed as "under review" at the Office of Management and Budget as of this morning, 4 April 2007.