Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Bernard Greenberg, MD

Specialist in West Chester, PA · enumerated 2006.

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

National Provider Identifier

1285731018

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Registry record

Entity type Individual (Type 1)

Name Bernard Greenberg

Credential MD

Sex Male

Practice address 440 E Marshall St, Ste 201, West Chester, PA, 19380

Phone (610) 738-2500

Fax (610) 738-2540

Enumeration date Sep 20, 2006

Last updated in NPPES Nov 5, 2007

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD009425E (PA) 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
00118207180101	Medicaid	PA	-

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 is the NPI number for Bernard Greenberg?

The National Provider Identifier (NPI) for Bernard Greenberg is 1285731018, a Type 1 (individual) record in the CMS NPPES registry.

Where does Bernard Greenberg practice?

The practice location on file with NPPES is in West Chester, PA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-05.