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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Lauren Elizabeth Tanzer, LCSW

Clinical Social Worker in Alameda, CA · enumerated 2010 · practices at Institute of Human Behavior, Research and Education.

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

National Provider Identifier

1659688067

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Registry record

Entity type Individual (Type 1)
Name Lauren Elizabeth Tanzer
Credential LCSW
Sex Female
Practice address 1910 Central Ave, Alameda, CA, 94501
Phone (510) 769-7100
Enumeration date Sep 7, 2010
Last updated in NPPES Feb 17, 2022

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 92288 (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.

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Frequently asked questions

Is NPI 1659688067 active?
Yes, as of the latest NPPES snapshot, NPI 1659688067 is active (record last updated 2022-02-17).
How do I verify Lauren Tanzer's NPI record?
Cross-check NPI 1659688067 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 2022-02-17.