Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Marquez Jr.

Licensed Practical Nurse in Islip, NY · enumerated 2022.

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

National Provider Identifier

1669112355

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name John Marquez Jr.

Sex Male

Practice address 2646 Union Blvd, Islip, NY, 11751

Phone (631) 383-8373

Enumeration date Mar 30, 2022

Last updated in NPPES Mar 30, 2022

Taxonomy & licenses

164W00000X Licensed Practical Nurse Nursing Service Providers · License 287159 (NY) Primary

Other identifiers

Identifier	Type	State	Issuer
1497374060	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1669112355 active?

Yes, as of the latest NPPES snapshot, NPI 1669112355 is active (record last updated 2022-03-30).

How do I verify John Marquez's NPI record?

Cross-check NPI 1669112355 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-30.