Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Matthew L Greenberger, M.D.

Urology Physician in Santa Ana, CA · enumerated 2006.

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

National Provider Identifier

1437161668

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Registry record

Entity type Individual (Type 1)

Name Dr. Matthew L Greenberger

Credential M.D.

Sex Male

Practice address 1801 N Broadway, Santa Ana, CA, 92706

Phone (714) 693-1915

Fax (714) 693-1127

Enumeration date Aug 13, 2006

Last updated in NPPES Jul 9, 2024

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License A70624 (CA) Primary

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

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 specialty is Matthew Greenberger?

Matthew Greenberger is registered in NPPES with the primary taxonomy of Urology Physician. 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 2024-07-09.