Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Guillermo De Jesus Castillo

Speech-Language Pathologist in Chestnut Ridge, NY · enumerated 2020.

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

National Provider Identifier

1003456757

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Registry record

Entity type Individual (Type 1)

Name Guillermo De Jesus Castillo

Sex Male

Practice address 501 Chestnut Ridge Rd Ste 205, Chestnut Ridge, NY, 10977

Phone (845) 638-3072

Enumeration date Jan 10, 2020

Last updated in NPPES Sep 28, 2023

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 033605 (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.

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Frequently asked questions

Is NPI 1003456757 active?

Yes, as of the latest NPPES snapshot, NPI 1003456757 is active (record last updated 2023-09-28).

How do I verify Guillermo Castillo's NPI record?

Cross-check NPI 1003456757 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Allison Curry Occupational Therapist · Chestnut Ridge, NY NPI 1659723583 Tamar Raymond Speech-Language Pathologist · Chestnut Ridge, NY NPI 1881113850 Heather Hlubik Developmental Therapist · Spring Valley, NY NPI 1841701828 Caitlin Ford Student in an Organized Health Care Education/Training Program · Chestnut Ridge, NY NPI 1417462946 Liliana Melendez Behavior Analyst · Chestnut Ridge, NY NPI 1215442355 Ahuva Aharonoff Student in an Organized Health Care Education/Training Program · Chestnut Ridge, NY NPI 1184123721 Regina Mirra Specialist · Chestnut Ridge, NY NPI 1255838876 Aliza Klein Speech-Language Pathologist · Chestnut Ridge, NY NPI 1932691698

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-28.