Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Anthony W Zydlewski, MD

Nephrology Physician in Norfolk, VA · enumerated 2005.

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

National Provider Identifier

1720077431

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Registry record

Entity type Individual (Type 1)

Name Dr. Anthony W Zydlewski

Credential MD

Sex Male

Practice address 6160 Kempsville Cir, Suite 302a, Norfolk, VA, 23502

Phone (757) 466-9288

Fax (757) 457-3691

Enumeration date Oct 14, 2005

Last updated in NPPES Oct 24, 2007

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 0101057450 (VA) Primary

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

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 Anthony Zydlewski?

Anthony Zydlewski is registered in NPPES with the primary taxonomy of Nephrology 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 2007-10-24.