Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory P Lewandowski, CRNA

Certified Registered Nurse Anesthetist in Fort Defiance, AZ · enumerated 2006 · practices at Fort Defiance Indian Hospital Board, Inc.

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

National Provider Identifier

1679684021

Verified

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Registry record

Entity type Individual (Type 1)

Name Gregory P Lewandowski

Credential CRNA

Sex Male

Practice address Corner of Route N12 and N7, Fort Defiance, AZ, 86504

Phone (505) 662-9256

Enumeration date Aug 31, 2006

Last updated in NPPES Oct 2, 2014

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License R42821 (NM) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
A1676	Medicaid	NM	-
NM006H10	Other	NM	NM BCBS

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 Gregory Lewandowski practice?

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

What is the NPI number for Gregory Lewandowski?

The National Provider Identifier (NPI) for Gregory Lewandowski is 1679684021, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-02.