Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joseph Lemuel De Leon, DMD

Dentist in Brentwood, NY · enumerated 2008.

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

National Provider Identifier

1720232143

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Registry record

Entity type Individual (Type 1)

Name Dr. Joseph Lemuel De Leon

Credential DMD

Sex Male

Practice address 1869 Brentwood Rd, Brentwood, NY, 11717

Phone (631) 416-5480

Fax (631) 994-2900

Enumeration date Nov 12, 2008

Last updated in NPPES May 7, 2025

Taxonomy & licenses

122300000X Dentist Dental Providers · License DN1857105 (MA) Secondary

1223G0001X General Practice Dentistry Dental Providers · License 9813 (MA) Secondary

122300000X Dentist Dental Providers · License 060985 (NY) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier	Type	State	Issuer
06551766	Medicaid	NY	-

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 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 Joseph De Leon?

Joseph De Leon is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-07.