Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tamar Gottlieb

Social Worker in Mill Valley, CA · enumerated 2023.

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

National Provider Identifier

1235844408

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Registry record

Entity type Individual (Type 1)

Name Tamar Gottlieb

Sex Female

Practice address 325b Tamalpais Ave, Mill Valley, CA, 94941

Phone (628) 667-2131

Enumeration date Jan 20, 2023

Last updated in NPPES Jan 20, 2023

Taxonomy & licenses

104100000X Social Worker 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

What is the NPI number for Tamar Gottlieb?

The National Provider Identifier (NPI) for Tamar Gottlieb is 1235844408, a Type 1 (individual) record in the CMS NPPES registry.

Where does Tamar Gottlieb practice?

The practice location on file with NPPES is in Mill Valley, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-20.