Nancy Callahan, LCSW MSW
NPI 1639258213 · Clinical Social Worker · Teaneck, NJ
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Callahan, LCSW MSW is a Clinical Social Worker provider in Teaneck, NJ (NPI 1639258213).
Provider details
- NPI number
- 1639258213
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW MSW
- Sex
- Female
- Sole proprietor
- No
- License
- 44SC04887700 (NJ)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Nancy Callahan's NPI number?
- Nancy Callahan's National Provider Identifier (NPI) is 1639258213, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Callahan's specialty?
- Nancy Callahan is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Nancy Callahan located?
- Nancy Callahan's practice location on file with NPPES is 362 Cedar Lane, Teaneck, NJ 07666.
- What is Nancy Callahan's phone number?
- The practice phone number listed in the NPPES registry for Nancy Callahan is (201) 390-1699.
- Does Nancy Callahan accept Medicare?
- Nancy Callahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Callahan's NPI active?
- Yes — Nancy Callahan's NPI (1639258213) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.