Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Esther Castillo, MSW
Social Worker in Long Beach, NY · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720890197
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Registry record
Entity type Individual (Type 1)
Name Ms. Esther Castillo
Credential MSW
Sex Female
Practice address 2-12 W Park Ave Ste 200, Long Beach, NY, 11561
Phone (516) 889-2332
Enumeration date Jan 23, 2025
Last updated in NPPES Jan 23, 2025
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License P132846 (NY) 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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Esther Castillo?
Esther Castillo is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-23.