Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Clinical Therapy Services

Community/Behavioral Health Agency in Fairfax Station, VA · enumerated 2015 · authorized official Shirley Williams, Indipendent Clinical Social Worker.

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

National Provider Identifier

1790178713

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Registry record

Entity type Organization (Type 2)

Legal business name Clinical Therapy Services

Practice address 9405 Larkdale Ter, Fairfax Station, VA, 22039

Phone (703) 581-7863

Enumeration date Mar 16, 2015

Last updated in NPPES Mar 16, 2015

Taxonomy & classification

251S00000X Community/Behavioral Health Agency Agencies · License 0904003799 (VA) Primary

251S00000X Community/Behavioral Health Agency Agencies · License 10522 (MD) Secondary

251S00000X Community/Behavioral Health Agency Agencies · License LC303400 (DC) Secondary

Authorized official

Name Shirley Williams

Title Indipendent Clinical Social Worker

Phone (703) 581-7863

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2015-03-16. Verify at npiregistry.cms.hhs.gov.

Where is Clinical Therapy Services located?

The practice location on file with NPPES is in Fairfax Station, VA.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-16.