Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Duffy Ferguson, LCSW, CSAC

Addiction (Substance Use Disorder) Counselor in Blacksburg, VA · enumerated 2006.

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

National Provider Identifier

1679671978

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Registry record

Entity type Individual (Type 1)

Name Duffy Ferguson

Credential LCSW, CSAC

Sex Female

Practice address 700 University City Blvd, Blacksburg, VA, 24060

Phone (540) 961-8300

Fax (540) 961-8465

Enumeration date Sep 20, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 0710000570 (VA) Primary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 0904003172 (VA) Secondary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Duffy Ferguson?

The National Provider Identifier (NPI) for Duffy Ferguson is 1679671978, a Type 1 (individual) record in the CMS NPPES registry.

Where does Duffy Ferguson practice?

The practice location on file with NPPES is in Blacksburg, VA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.