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

Diana Juhee Chang

Endocrinology, Diabetes & Metabolism Physician in Ventura, CA · enumerated 2014.

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

National Provider Identifier

1396142386

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Registry record

Entity type Individual (Type 1)
Name Diana Juhee Chang
Sex Female
Practice address Ventura, CA, 93003
Phone (805) 642-8252
Fax (805) 642-8237
Enumeration date Nov 19, 2014
Last updated in NPPES Jul 8, 2021

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

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License A154454 (CA) Primary

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 specialty is Diana Chang?
Diana Chang is registered in NPPES with the primary taxonomy of Endocrinology, Diabetes & Metabolism Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-08.