45 CFR 162.406 - Standard unique health identifier for health care providers.
(a) Standard. The standard unique health identifier for health care providers is the National Provider Identifier (NPI). The NPI is a 10-position numeric identifier, with a check digit in the 10th position, and no intelligence about the health care provider in the number.
Title 45 published on 2014-10-01
no entries appear in the Federal Register after this date.