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This variable is contained in the following files: Part D Pharmacy Characteristics File
SAS Name
PHYSICAL_LOCATION_OPEN_DATE

The date the pharmacy opened at this location, as reported by the pharmacy to NCPDP.

Comments

This variable (the store open date) is missing for 72% of the pharmacies, and a default of date 1/1/1990 may appear when the date was not specified; this is self-reported data from pharmacies.

Additional details regarding the National Council for Prescription Drug Programs (NCPDP) source data are available at: https://www.ncpdataq.org/dataQInfo/pages/dataQFiles.htm.

Source: NCDPD DataQ™