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Madeline Duncan Chiropractic Corporation

Chiropractor in Danville, CA · enumerated 2025 · authorized official Madeline Duncan, President.

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

National Provider Identifier

1881407260

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Registry record

Entity type Organization (Type 2)
Legal business name Madeline Duncan Chiropractic Corporation
Practice address 318 Diablo Rd Ste 245, Danville, CA, 94526
Phone (925) 290-1830
Fax (925) 290-1564
Enumeration date Jan 29, 2025
Last updated in NPPES Jan 29, 2025

Taxonomy & classification

111N00000X Chiropractor Chiropractic Providers Primary

Authorized official

Name Madeline Duncan
Title President
Phone (925) 286-0259

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

Where is Madeline Duncan Chiropractic Corporation located?
The practice location on file with NPPES is in Danville, CA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-01-29. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-29.