HARLEY ANNABELLE MASON MSW,LSW
NPI 1952285694
Social Worker in Alton, IL
About Harley Annabelle Mason Msw,lsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HARLEY ANNABELLE MASON MSW,LSW (NPI 1952285694) is an individual social worker in Alton, Illinois, licensed in Illinois (150.118155) and active in the NPI registry since August 2025.
NPPES Registry Identity
Specialties & Licenses
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Harley Mason's NPI number?
The NPI number for Harley Mason is 1952285694. It was assigned to this individual provider in the NPPES registry on August 5, 2025.
Where is Harley Mason located?
Harley Mason practices at 2615 Edwards St, Alton, IL 62002. The listed phone number is (618) 462-2331.
What is Harley Mason's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
When was this NPI record last updated?
The NPPES record for Harley Mason was last updated on October 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.