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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katlyn Y Nasseri

Physical Therapist in Chicago, IL · enumerated 2015.

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

National Provider Identifier

1245603745

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Registry record

Entity type Individual (Type 1)
Name Katlyn Y Nasseri
Sex Female
Practice address 1725 W Harrison St Ste 440, Chicago, IL, 60612
Phone (312) 563-2454
Fax (312) 563-2222
Enumeration date Nov 5, 2015
Last updated in NPPES Jun 30, 2022

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 070021921 (IL) Primary

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 NPI 1245603745 active?
Yes, as of the latest NPPES snapshot, NPI 1245603745 is active (record last updated 2022-06-30).
How do I verify Katlyn Nasseri's NPI record?
Cross-check NPI 1245603745 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-30.