Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Brian Hasser, LCSW
School Social Worker in Fairfax, VA · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477273258
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Registry record
Entity type Individual (Type 1)
Name Brian Hasser
Credential LCSW
Sex Male
Practice address 3911 Blenheim Blvd Ste 43b, Fairfax, VA, 22030
Phone (703) 691-0036
Enumeration date Aug 31, 2022
Last updated in NPPES Oct 15, 2025
Taxonomy & licenses
1041S0200X School Social Worker Behavioral Health & Social Service Providers · License PPS-0607536 (VA) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW credential
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 Brian Hasser?
The National Provider Identifier (NPI) for Brian Hasser is 1477273258, a Type 1 (individual) record in the CMS NPPES registry.
Where does Brian Hasser practice?
The practice location on file with NPPES is in Fairfax, VA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-15.