Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John E. Duppenthaler, D.C.

Chiropractor in Gig Harbor, WA · enumerated 2007.

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

National Provider Identifier

1407972540

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Registry record

Entity type Individual (Type 1)

Name Dr. John E. Duppenthaler

Credential D.C.

Sex Male

Practice address 6659 Kimball Dr, Suite A-102, Gig Harbor, WA, 98335

Phone (253) 857-9100

Fax (253) 857-3110

Enumeration date Mar 21, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers 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.

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Frequently asked questions

What is the NPI number for John Duppenthaler?

The National Provider Identifier (NPI) for John Duppenthaler is 1407972540, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Duppenthaler practice?

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

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