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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Samuel Duncan, DC

Chiropractor in Davenport, IA · enumerated 2020 · practices at Duncan Chiropractic & Acupuncture Clinic.

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

National Provider Identifier

1972119840

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Registry record

Entity type Individual (Type 1)
Name Dr. Samuel Duncan
Credential DC
Sex Male
Practice address Davenport, IA, 52804
Phone (563) 381-2010
Enumeration date Sep 16, 2020
Last updated in NPPES Sep 16, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 105356 (IA) 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 Samuel Duncan?
The National Provider Identifier (NPI) for Samuel Duncan is 1972119840, a Type 1 (individual) record in the CMS NPPES registry.
Where does Samuel Duncan practice?
The practice location on file with NPPES is in Davenport, IA. 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 2020-09-16.