Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Martha C Barenbrugge, LCSW

Social Worker in San Jose, CA · enumerated 2007.

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

National Provider Identifier

1255470605

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Registry record

Entity type Individual (Type 1)

Name Mr. Martha C Barenbrugge

Credential LCSW

Sex Female

Practice address 86 S 14th St, Alliance for Community Care Isp, San Jose, CA, 95112

Phone (408) 938-6750

Fax (408) 977-0145

Enumeration date Feb 5, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License LCSW 18869 (CA) Primary

104100000X Social Worker Behavioral Health & Social Service Providers · License 6801014853 (MI) Secondary

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.

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Frequently asked questions

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.

What specialty is Martha Barenbrugge?

Martha Barenbrugge is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.