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Duncan James Jacobson, DO

Family Medicine Physician in Modesto, CA · enumerated 2020.

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

National Provider Identifier

1457989345

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Registry record

Entity type Individual (Type 1)
Name Duncan James Jacobson
Credential DO
Sex Male
Practice address 1400 Florida Ave Ste 102, Modesto, CA, 95350
Phone (209) 576-3528
Enumeration date Mar 28, 2020
Last updated in NPPES Oct 18, 2023

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A20051 (CA) 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.

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Frequently asked questions

Where does Duncan Jacobson practice?
The practice location on file with NPPES is in Modesto, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Duncan Jacobson?
The National Provider Identifier (NPI) for Duncan Jacobson is 1457989345, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-18.