DeYoung has been credited as the writer of more Styx songs than any other Styx member. He was also the band's most successful writer, penning 7 of the band's 8 Billboard Top 10 singles as well as a solo top 10 single.
national provider identifier (NPI) A national provider identifier (NPI) is a unique ten-digit identification number required by HIPAA for all health care providers in the United States. Providers must use their NPI to identify themselves in all HIPAA transactions. Download this free guide.
The NPI (National Provider Identifier) is the only health care provider identifier that can be used for identification purposes in standard transactions by covered entities. The Health Insurance Portability and Accountability Act (HIPAA) requires that covered entities use NPI numbers in standard transactions.