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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Alexandria Harz, LCSW

Clinical Social Worker in Fairfax, VA · enumerated 2017 · practices at Melissa Callahan Pllc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1992246870

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Registry record

Entity type Individual (Type 1)
Name Mrs. Alexandria Harz
Credential LCSW
Sex Female
Practice address Fairfax, VA, 22030
Phone (703) 278-2984
Enumeration date Mar 13, 2017
Last updated in NPPES Jul 9, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 0904012861 (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.

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Frequently asked questions

What is the NPI number for Alexandria Harz?
The National Provider Identifier (NPI) for Alexandria Harz is 1992246870, a Type 1 (individual) record in the CMS NPPES registry.
Where does Alexandria Harz 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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-09.