NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Yifat Block, PSY.D., L.C.S.W.

Clinical Social Worker in Manhattan Beach, CA · enumerated 2007.

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

National Provider Identifier

1821147331

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Registry record

Entity type Individual (Type 1)
Name Yifat Block
Credential PSY.D., L.C.S.W.
Sex Female
Practice address Manhattan Beach, CA, 90266
Phone (310) 529-0903
Enumeration date Jan 10, 2007
Last updated in NPPES Aug 23, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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 1821147331 active?
Yes, as of the latest NPPES snapshot, NPI 1821147331 is active (record last updated 2021-08-23).
How do I verify Yifat Block's NPI record?
Cross-check NPI 1821147331 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 2021-08-23.