Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Greenblum, MD

Specialist in Fair Lawn, NJ · enumerated 2006.

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

National Provider Identifier

1073575551

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Registry record

Entity type Individual (Type 1)

Name Robert Greenblum

Credential MD

Sex Male

Practice address 15-01 Broadway, Ste 20, Fair Lawn, NJ, 07410

Phone (201) 794-6008

Fax (201) 794-6190

Enumeration date Apr 3, 2006

Last updated in NPPES Aug 7, 2008

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MA051650 (NJ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
0857505	Medicaid	NJ	-

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 Robert Greenblum?

Robert Greenblum is registered in NPPES with the primary taxonomy of Specialist. 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 2008-08-07.