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

Mr. John Derenzo, SLP

Q: What is the NPI number for John Derenzo?

The National Provider Identifier (NPI) for John Derenzo is 1528449501, a Type 1 (individual) record in the CMS NPPES registry.

Speech-Language Pathologist in Howard Beach, NY · enumerated 2015.

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

National Provider Identifier

1528449501

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Registry record

Entity type Individual (Type 1)

Name Mr. John Derenzo

Credential SLP

Sex Male

Practice address Howard Beach, NY, 11414

Phone (917) 407-3789

Enumeration date Jun 15, 2015

Last updated in NPPES Jun 15, 2015

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

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 024569 (NY) Primary

SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does John Derenzo practice?

The practice location on file with NPPES is in Howard Beach, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for John Derenzo?

The National Provider Identifier (NPI) for John Derenzo is 1528449501, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-15.