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This variable is contained in the following files: Durable Medical Equipment (Fee-for-Service)
Short SAS Name
RFR_UPIN
SAS Name
RFR_PHYSN_UPIN

The unique physician identification number (UPIN) of the physician who referred the beneficiary or the physician who ordered the Part B services or durable medical equipment (DME).

NPIs replaced UPINs as the standard provider identifiers beginning in 2007. The UPIN is almost never populated after 2009.

Comments

Source: NCH