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

Carolyn PA Gnia Chang

School Counselor in Mountain View, CA · enumerated 2024 · practices at Mountain View Whisman School District.

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

National Provider Identifier

1598588022

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Registry record

Entity type Individual (Type 1)

Name Carolyn PA Gnia Chang

Sex Female

Practice address Mountain View, CA, 94043

Phone (650) 903-6945

Enumeration date Nov 4, 2024

Last updated in NPPES Feb 13, 2026

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

Taxonomy & licenses

101YS0200X School Counselor Behavioral Health & Social Service Providers · License 250319582 (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

How do I verify Carolyn Chang's NPI record?

Cross-check NPI 1598588022 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1598588022 active?

Yes, as of the latest NPPES snapshot, NPI 1598588022 is active (record last updated 2026-02-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-13.