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Isleep Diagnostics

Sleep Disorder Diagnostic Clinic/Center in Brooklyn, NY · enumerated 2011 · authorized official Joshua Wiznitzer, Director of Operations.

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

National Provider Identifier

1619251030

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Registry record

Entity type Organization (Type 2)
Legal business name Isleep Diagnostics
Practice address 76 Battery Ave, Bsmt Level, Brooklyn, NY, 11228
Phone (718) 333-5193
Fax (888) 929-7537
Enumeration date Oct 4, 2011
Last updated in NPPES Oct 4, 2011

Taxonomy & classification

261QS1200X Sleep Disorder Diagnostic Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Joshua Wiznitzer
Title Director of Operations
Phone (888) 929-7533

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

What is the NPI number for Isleep Diagnostics?
The NPI for Isleep Diagnostics is 1619251030, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Isleep Diagnostics?
NPPES lists Joshua Wiznitzer (Director of Operations) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-04.