Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Peter J. Callahan, PLLC

Organization Clinical Social Worker · NPI 1669644852

Peter J. Callahan, PLLC is a Clinical Social Worker in Martinsburg, West Virginia. Licensed in West Virginia. Registered with an NPI since 2008.

Licensed in
WV
In the registry since
2008
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1020 Winchester Ave
Martinsburg, WV 25401-1650
Phone: (304) 886-4118
Fax: (304) 579-8606
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence DP00941942 (WV)

Record details

NPI number1669644852
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Peter Callahan — Psychotherapist · (304) 886-4118
Other names Callahan, Pllc
NPI enumeratedMarch 27, 2008
Last updated in NPPESMarch 3, 2015
Mailing addressPo Box 1074, Martinsburg, WV 25402-1074

Other providers in Martinsburg