Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Justine Ellen Lieb, PT

Physical Therapist in Cortland, NY · enumerated 2013.

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

National Provider Identifier

1336585298

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Registry record

Entity type Individual (Type 1)

Name Mrs. Justine Ellen Lieb

Credential PT

Sex Female

Practice address 134 Homer Ave, Cortland, NY, 13045

Phone (607) 753-0000

Fax (607) 753-6073

Enumeration date May 20, 2013

Last updated in NPPES Oct 6, 2021

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 029021 (NY) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Justine Lieb's NPI record?

Cross-check NPI 1336585298 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1336585298 active?

Yes, as of the latest NPPES snapshot, NPI 1336585298 is active (record last updated 2021-10-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-06.