Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew D Mason, MD

Pediatric Urology Physician in Syracuse, NY · enumerated 2008.

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

National Provider Identifier

1821264946

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Registry record

Entity type Individual (Type 1)

Name Matthew D Mason

Credential MD

Sex Male

Practice address 750 E Adams St, Upstate Medical University - Department of Urology, Syracuse, NY, 13210

Phone (315) 464-1500

Fax (315) 464-6117

Enumeration date May 8, 2008

Last updated in NPPES May 17, 2015

Taxonomy & licenses

2088P0231X Pediatric Urology Physician Allopathic & Osteopathic Physicians · License 279617 (NY) 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.

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Frequently asked questions

How do I verify Matthew Mason's NPI record?

Cross-check NPI 1821264946 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1821264946 active?

Yes, as of the latest NPPES snapshot, NPI 1821264946 is active (record last updated 2015-05-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-17.