NPI Portal NPI Lookup & Verification

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

Dorian Rose Nissenson, M.S.P.T.

Neurology Physical Therapist in Westport, CT · enumerated 2007 · practices at Hands on at Home Physical Therapy, LLC.

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

National Provider Identifier

1255462172

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Registry record

Entity type Individual (Type 1)
Name Dorian Rose Nissenson
Credential M.S.P.T.
Sex Female
Practice address Westport, CT, 06880
Fax (203) 293-4173
Enumeration date Mar 9, 2007
Last updated in NPPES Dec 15, 2015

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

Taxonomy & licenses

2251N0400X Neurology Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 014800 (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

How do I verify Dorian Nissenson's NPI record?
Cross-check NPI 1255462172 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1255462172 active?
Yes, as of the latest NPPES snapshot, NPI 1255462172 is active (record last updated 2015-12-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-15.