Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Darwin I Griffeth IV, D.C.

Chiropractor in Irving, TX · enumerated 2006 · practices at Mercedes S Dominguez, DDS, Ms, PA.

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

National Provider Identifier

1396784492

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Registry record

Entity type Individual (Type 1)

Name Dr. Darwin I Griffeth IV

Credential D.C.

Sex Male

Practice address 7200 N Highway 161, Suite 300, Irving, TX, 75039

Phone (972) 755-8119

Fax (214) 615-9734

Enumeration date Jun 5, 2006

Last updated in NPPES Jul 16, 2008

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 10065 (TX) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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 is the NPI number for Darwin Griffeth?

The National Provider Identifier (NPI) for Darwin Griffeth is 1396784492, a Type 1 (individual) record in the CMS NPPES registry.

Where does Darwin Griffeth practice?

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

Other providers at this practice address

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Mercedes S Dominguez, DDS, Ms, PA Specialist · Irving, TX NPI 1962731927

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-16.