Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sarah Kleinstein

Physical Therapist in New York, NY · enumerated 2020.

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

National Provider Identifier

1437799137

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Registry record

Entity type Individual (Type 1)

Name Sarah Kleinstein

Sex Female

Practice address 240 E 38th St Fl 16, New York, NY, 10016

Phone (212) 263-6033

Enumeration date Jan 10, 2020

Last updated in NPPES Jan 10, 2020

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 037984 (NY) 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 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 Sarah Kleinstein?

Sarah Kleinstein is registered in NPPES with the primary taxonomy of Physical Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-10.