Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Alan Duncan, D.O.

Family Medicine Physician in Dublin, CA · enumerated 2006.

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

National Provider Identifier

1710967922

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Registry record

Entity type Individual (Type 1)

Name Dr. David Alan Duncan

Credential D.O.

Sex Male

Practice address Fci Dublin, 5701 8th St, Dublin, CA, 94568

Phone (925) 833-7500

Enumeration date Jan 23, 2006

Last updated in NPPES Sep 6, 2020

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A15980 (CA) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 02002571A (IN) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

How do I verify David Duncan's NPI record?

Cross-check NPI 1710967922 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1710967922 active?

Yes, as of the latest NPPES snapshot, NPI 1710967922 is active (record last updated 2020-09-06).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-06.