Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ridgewood Diagnostic Laboratory, LLC

Clinical Medical Laboratory in Hackensack, NJ · enumerated 2015 · authorized official Alexandr Zaitsev, President.

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

National Provider Identifier

1568839173

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Registry record

Entity type Organization (Type 2)

Legal business name Ridgewood Diagnostic Laboratory, LLC

Practice address 126 State Street, 2nd Floor, Hackensack, NJ, 07601

Phone (973) 542-2343

Fax (201) 632-6548

Enumeration date Aug 31, 2015

Last updated in NPPES Nov 20, 2018

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories · License 31D2109691 (NJ) Primary

Authorized official

Name Alexandr Zaitsev

Title President

Phone (862) 703-0506

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2018-11-20. Verify at npiregistry.cms.hhs.gov.

Where is Ridgewood Diagnostic Laboratory, LLC located?

The practice location on file with NPPES is in Hackensack, NJ.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-20.