Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mathew Scott Greenberg, MD

Anatomic Pathology & Clinical Pathology Physician in Portland, OR · enumerated 2007.

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

National Provider Identifier

1083819551

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Registry record

Entity type Individual (Type 1)

Name Dr. Mathew Scott Greenberg

Credential MD

Sex Male

Practice address 4400 Ne Halsey St, Bldg #3 Pathology and Laboratory, Portland, OR, 97213

Phone (503) 893-7757

Fax (503) 893-7795

Enumeration date Jun 15, 2007

Last updated in NPPES Sep 25, 2019

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License MD27976 (OR) 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
242856	Medicaid	OR	-

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 Mathew Greenberg?

Mathew Greenberg is registered in NPPES with the primary taxonomy of Anatomic Pathology & Clinical Pathology Physician. 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 2019-09-25.