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

Dr. Kathleen Mallen-Ozimkowski, PSY.D.

Cognitive & Behavioral Psychologist in Northport, NY · enumerated 2021.

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

National Provider Identifier

1912571167

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Registry record

Entity type Individual (Type 1)

Name Dr. Kathleen Mallen-Ozimkowski

Credential PSY.D.

Sex Female

Practice address Northport, NY, 11768

Phone (516) 885-3226

Fax (631) 754-3405

Enumeration date May 13, 2021

Last updated in NPPES May 13, 2021

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

Taxonomy & licenses

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License 023310-01 (NY) Secondary

103TF0000X Family Psychologist Behavioral Health & Social Service Providers · License 023310-01 (NY) Secondary

103TS0200X School Psychologist Behavioral Health & Social Service Providers · License 023310-01 (NY) Secondary

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 023310-01 (NY) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 023310-01 (NY) Secondary

103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License 023310-01 (NY) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Kathleen Mallen-Ozimkowski?

Kathleen Mallen-Ozimkowski is registered in NPPES with the primary taxonomy of Cognitive & Behavioral Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-13.