Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alexandra Butler, LCSW
Social Worker in Fairfax, VA · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1104736701
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Registry record
Entity type Individual (Type 1)
Name Alexandra Butler
Credential LCSW
Sex Female
Practice address 8221 Willow Oaks Corporate Dr Ste 430, Fairfax, VA, 22031
Phone (703) 289-7580
Enumeration date Sep 8, 2026
Last updated in NPPES Sep 8, 2026
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 0904020255 (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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Alexandra Butler?
Alexandra Butler is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-09-08.