Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Simon Greenstein

Optician in North Bergen, NJ · enumerated 2023.

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

National Provider Identifier

1871285122

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Registry record

Entity type Individual (Type 1)

Name Simon Greenstein

Sex Male

Practice address 2100 88th St, North Bergen, NJ, 07047

Phone (201) 758-2895

Fax (201) 758-2897

Enumeration date May 24, 2023

Last updated in NPPES May 24, 2023

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License 31TD00181500 (NJ) 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

What specialty is Simon Greenstein?

Simon Greenstein is registered in NPPES with the primary taxonomy of Optician. 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 2023-05-24.