Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gianna Lillian Johnson

Mental Health Counselor in Sunnyvale, CA · enumerated 2026.

Data current as of Jul 11, 2026 · sourced from CMS NPPES

National Provider Identifier

1669311973

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Registry record

Entity type Individual (Type 1)

Name Gianna Lillian Johnson

Sex Female

Practice address 1054 Carson Dr, Sunnyvale, CA, 94086

Phone (408) 522-8267

Enumeration date Mar 25, 2026

Last updated in NPPES Mar 25, 2026

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1669311973 active?

Yes — as of the latest NPPES snapshot, NPI 1669311973 is active (record last updated 2026-03-25).

How do I verify Gianna Johnson's NPI record?

Cross-check NPI 1669311973 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2026-03-25.