Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Courtney Blake Sage, LCSW

Social Worker in Fremont, CA · enumerated 2013.

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

National Provider Identifier

1508299223

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Registry record

Entity type Individual (Type 1)

Name Ms. Courtney Blake Sage

Credential LCSW

Sex Female

Practice address 39155 Liberty St, G710, Fremont, CA, 94538

Phone (510) 795-2423

Enumeration date Aug 16, 2013

Last updated in NPPES Jan 6, 2014

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License 26149 ASW (CA) Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License 29835 (CA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW 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

Is NPI 1508299223 active?

Yes, as of the latest NPPES snapshot, NPI 1508299223 is active (record last updated 2014-01-06).

How do I verify Courtney Sage's NPI record?

Cross-check NPI 1508299223 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-06.