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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Martin Esquivel

Social Worker in San Francisco, CA · enumerated 2007.

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

National Provider Identifier

1861600181

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Registry record

Entity type Individual (Type 1)
Name Martin Esquivel
Sex Male
Practice address 1663 Mission St, San Francisco, CA, 94103
Phone (415) 575-4500
Enumeration date May 18, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License ASW 16783 (CA) 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.

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Frequently asked questions

Is NPI 1861600181 active?
Yes, as of the latest NPPES snapshot, NPI 1861600181 is active (record last updated 2007-07-08).
How do I verify Martin Esquivel's NPI record?
Cross-check NPI 1861600181 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 2007-07-08.