It has come to the attention of the Centers for Medicare and Medicaid Services that a trade publication recently published an incorrect schedule of implementation dates, by contractor, for claim rejections based on the inability to locate a National Provider Identifier (NPI)/legacy identifier pair on the Medicare NPI crosswalk. Providers will be advised by their Medicare contractor as to the particular timeframe for their transition. Any other published schedules are unofficial and may include inaccurate dates. Medicare providers are urged to rely only on information from their Medicare contractors. Access the CMS NPI page.
