Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew Irwin, MD

Family Medicine Physician in Falls Church, VA · enumerated 2006.

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

National Provider Identifier

1831157601

Verified

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Registry record

Entity type Individual (Type 1)

Name Matthew Irwin

Credential MD

Sex Male

Practice address 2900 Telestar Ct, Falls Church, VA, 22042

Phone (703) 396-6197

Fax (703) 779-1372

Enumeration date May 2, 2006

Last updated in NPPES Apr 3, 2012

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 0101234508 (VA) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD034928 (DC) Secondary

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

Is NPI 1831157601 active?

Yes, as of the latest NPPES snapshot, NPI 1831157601 is active (record last updated 2012-04-03).

How do I verify Matthew Irwin's NPI record?

Cross-check NPI 1831157601 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-03.