Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Abigail Flora Williamson, LMSW
Social Worker in Rochester, NY · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275348732
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Registry record
Entity type Individual (Type 1)
Name Abigail Flora Williamson
Credential LMSW
Sex Female
Practice address 3019 Monroe Ave Ste 200r, Rochester, NY, 14618
Phone (585) 572-7017
Enumeration date Feb 11, 2025
Last updated in NPPES Feb 11, 2025
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 119066-01 (NY) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Abigail Williamson?
The National Provider Identifier (NPI) for Abigail Williamson is 1275348732, a Type 1 (individual) record in the CMS NPPES registry.
Where does Abigail Williamson practice?
The practice location on file with NPPES is in Rochester, NY. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-11.