Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Benjamin W Aronoff, MD

Nephrology Physician in Teaneck, NJ · enumerated 2006.

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

National Provider Identifier

1922075878

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Registry record

Entity type Individual (Type 1)

Name Benjamin W Aronoff

Credential MD

Sex Male

Practice address 870 Palisade Ave, Teaneck, NJ, 07666

Phone (201) 836-0897

Fax (201) 836-8042

Enumeration date Feb 28, 2006

Last updated in NPPES Sep 21, 2022

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 25MA07715400 (NJ) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Benjamin Aronoff?

Benjamin Aronoff 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-21.