Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Martin R Greget, MD

Otolaryngology Physician in Renton, WA · enumerated 2006.

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

National Provider Identifier

1255409843

Verified

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Registry record

Entity type Individual (Type 1)

Name Mr. Martin R Greget

Credential MD

Sex Male

Practice address 401 South 43rd St, 200, Renton, WA, 98055

Phone (425) 656-4060

Fax (425) 656-4059

Enumeration date Dec 1, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License MD00025989 (WA) 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
1061597	Medicaid	WA	-

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

Where does Martin Greget practice?

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

What is the NPI number for Martin Greget?

The National Provider Identifier (NPI) for Martin Greget is 1255409843, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.