NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Kathy L. Mallow, M.S.W.

Clinical Social Worker in Hoboken, NJ · enumerated 2007.

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

National Provider Identifier

1366566978

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Registry record

Entity type Individual (Type 1)
Name Ms. Kathy L. Mallow
Credential M.S.W.
Sex Female
Practice address Hoboken, NJ, 07030
Phone (201) 222-1869
Enumeration date Mar 19, 2007
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 44SC00870800 (NJ) Primary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 045046 (NY) Secondary

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 Kathy Mallow?
The National Provider Identifier (NPI) for Kathy Mallow is 1366566978, a Type 1 (individual) record in the CMS NPPES registry.
Where does Kathy Mallow practice?
The practice location on file with NPPES is in Hoboken, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.