An old NPPES last_updated date does NOT mean the practice closed or that CMS
penalizes them: an NPI never expires and there is no NPPES login schedule. Many
records are stale precisely because nothing changed. Removed the overclaim that
an old record 'has almost certainly drifted' and the false 'attest periodically'
duty. Now states the real rule (correct NPPES within 30 days of a change) and
makes the harm conditional ('if anything has changed since then, your record is
now out of date'). Keeps NPPES distinct from Medicare revalidation/PECOS, which
is the separate segment that actually carries deactivation stakes.
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