PETER JOSEPH CALLAHAN LGSW
NPI 1205834389
Social Worker - Clinical in Martinsburg, WV
About Peter Joseph Callahan Lgsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PETER JOSEPH CALLAHAN LGSW (NPI 1205834389) is an individual clinical provider in Martinsburg, West Virginia, licensed in West Virginia (DP09966148) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Peter Joseph Callahan Lgsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Peter Callahan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Martinsburg, WV 25401
- Reassigned Medicare billing, West Virginia enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 25401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Peter Callahan's NPI number?
The NPI number for Peter Callahan is 1205834389. It was assigned to this individual provider in the NPPES registry on July 12, 2005. The provider is also known as Callahan Counseling Services.
Where is Peter Callahan located?
Peter Callahan practices at 1020 Winchester Ave, Martinsburg, WV 25401. The listed phone number is (304) 886-4118.
What is Peter Callahan's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Peter Callahan enrolled in Medicare?
Yes. Peter Callahan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Peter Callahan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Peter Callahan reassigns Medicare benefits to Peter J. Callahan, PLLC (Martinsburg, WV). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Peter Callahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Peter Callahan accept?
Health plans from Highmark Blue Cross Blue Shield West Virginia and Peak Health Insurance list Peter Callahan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Peter Callahan was last updated on November 18, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Peter Joseph Callahan, LGSW · NPI 1205834389
Clinical provider in Martinsburg, West Virginia. Individual provider, active in the CMS NPPES registry since July 12, 2005.
## Identity
- **NPI:** 1205834389 (Entity type: Individual)
- **Enumerated:** July 12, 2005
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** DP09966148 (West Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 1020 WINCHESTER AVE, Martinsburg, WV 25401-1650
- **Phone:** (304) 886-4118 · **Fax:** (304) 579-8606
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Peter J. Callahan, PLLC (NPI 1669644852, Martinsburg, WV), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** November 18, 2019
- **Other identifiers:** Medicaid 3810000505 (WV)
---
Source: [NPI Profile](https://npiprofile.com/npi/1205834389) · Data from the CMS NPPES public registry.