Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Justin Zack, MD

Vascular & Interventional Radiology Physician in Riverhead, NY · enumerated 2006.

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

National Provider Identifier

1407964695

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Registry record

Entity type Individual (Type 1)

Name Justin Zack

Credential MD

Sex Male

Practice address 1333 Roanoke Ave, Riverhead, NY, 11901

Phone (631) 727-2755

Fax (631) 208-9521

Enumeration date Aug 28, 2006

Last updated in NPPES May 16, 2008

Taxonomy & licenses

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License 209465 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
02206999	Medicaid	NY	-
CF3402	Other	NY	RR MEDICARE
W11401	Other	NY	BC/BS
W22111	Other	NY	MEDICARE GROUP SHR
WEU091	Other	NY	MEDICARE GROUP HR

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 Justin Zack?

Justin Zack is registered in NPPES with the primary taxonomy of Vascular & Interventional Radiology Physician. 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 2008-05-16.