Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Marilyn J. Krieger, Ph.D. Psychologist Inc

Clinical Psychologist in Mill Valley, CA · enumerated 2023 · authorized official Marilyn Krieger, Psychologist.

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

National Provider Identifier

1184493694

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Registry record

Entity type Organization (Type 2)

Legal business name Marilyn J. Krieger, Ph.D. Psychologist Inc

Practice address 18 Overhill Rd, Mill Valley, CA, 94941

Phone (415) 346-5937

Enumeration date Dec 26, 2023

Last updated in NPPES Dec 26, 2023

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers Primary

Authorized official

Name Marilyn Krieger

Title Psychologist

Phone (415) 346-5937

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

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Marilyn J. Krieger, Ph.D. Psychologist Inc?

Marilyn J. Krieger, Ph.D. Psychologist Inc is registered in NPPES as a Clinical Psychologist (its primary provider taxonomy).

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Marilyn Krieger Clinical Psychologist · Mill Valley, CA NPI 1841069416

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-26.