October 2, 2007 – About 19.7 percent of the business addresses of physicians who were issued a National Provider Identifier (NPI) are invalid because the physicians moved to a new location, retired or are deceased, according to a recent audit by SK&A, a provider of healthcare information solutions and research.
The SK&A study also reveals 68 percent of the NPI numbers were enumerated more than eight months ago, and the average age of an NPI number is 13.16 months. The Centers for Medicare and Medicaid Services (CMS) began issuing the new identifiers as early as May 2005.