Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr Robert S Greenberg DDS PC

Q: What type of organization is Dr Robert S Greenberg DDS PC?

Dr Robert S Greenberg DDS PC is registered in NPPES as a Dentist (its primary provider taxonomy).

Dentist in Massapequa, NY · enumerated 2005 · authorized official Robert Greenberg, Pres.

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

National Provider Identifier

1437140241

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Registry record

Entity type Organization (Type 2)

Legal business name Dr Robert S Greenberg DDS PC

Practice address 341 Unqua Rd, Massapequa, NY, 11758

Phone (516) 799-7734

Fax (516) 795-4257

Enumeration date Nov 1, 2005

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

122300000X Dentist Dental Providers · License 23216 (NY) Primary

Authorized official

Name Robert Greenberg

Title Pres

Phone (516) 799-7734

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 type of organization is Dr Robert S Greenberg DDS PC?

Dr Robert S Greenberg DDS PC is registered in NPPES as a Dentist (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.