Final answer:
True, a crosswalk is not created to match UPIN to NPI, since UPINs were phased out in favor of the NPI system as the standard identifier for health care providers.
Step-by-step explanation:
The statement that a crosswalk is not created to match UPIN (Unique Physician Identification Number) to NPI (National Provider Identifier) is True. UPINs were used prior to the introduction of NPIs as a means of identifying individual health care providers in the United States.
However, UPINs were discontinued in 2007, and since then, NPIs have become the standard identifier for all Medicare services, health plans, and health care providers as mandated by the Health Insurance Portability and Accountability Act (HIPAA). The NPI is a unique 10-digit identification number issued to health care providers by the Centers for Medicare & Medicaid Services (CMS). While a crosswalk does exist to help convert legacy identifiers to NPI for historical data purposes, the main intent is to fully transition to NPI use for identification and billing in the health care system.