Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Diana Sionov, PT

Orthotic Fitter in Elmhurst, NY · enumerated 2006.

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

National Provider Identifier

1417031956

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Registry record

Entity type Individual (Type 1)

Name Ms. Diana Sionov

Credential PT

Sex Female

Practice address 80th St & 41st Ave, Elmhurst, NY, 11373

Phone (718) 334-5970

Fax (718) 334-5958

Enumeration date Oct 24, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

225000000X Orthotic Fitter Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 019124 (NY) Primary

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

Other identifiers

Identifier	Type	State	Issuer
00246075	Medicaid	NY	-

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

What specialty is Diana Sionov?

Diana Sionov is registered in NPPES with the primary taxonomy of Orthotic Fitter. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.