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

Dr. Eleftherios Zisis, M.D.

Vascular Surgery Physician in Essex Fells, NJ · enumerated 2006.

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

National Provider Identifier

1659384584

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Registry record

Entity type Individual (Type 1)

Name Dr. Eleftherios Zisis

Credential M.D.

Sex Male

Practice address Essex Fells, NJ, 07021

Phone (973) 403-8262

Fax (973) 403-8262

Enumeration date Aug 14, 2006

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License MA36053 (NJ) 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
0017008	Other	NJ	GHI
ES541	Other	NJ	OXFORD
090D70100	Other	NY	BLUE CROSS
466355	Other	NJ	CIGNA

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

What specialty is Eleftherios Zisis?

Eleftherios Zisis is registered in NPPES with the primary taxonomy of Vascular Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.