Updated research request forms and data security approval requirement effective 4/24/23
This variable is contained in the following files:
SAS Name
OT_PHYSN_UPIN
On an institutional claim, the unique physician identification number (UPIN) of the other physician associated with the institutional claim.
NPIs replaced UPINs as the standard provider identifiers beginning in 2007. The UPIN is almost never populated after 2009.
Source: NCH