Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Armistead D Williams III, M.D.

Neurology Physician in New York, NY · enumerated 2006.

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

National Provider Identifier

1073580908

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Registry record

Entity type Individual (Type 1)

Name Armistead D Williams III

Credential M.D.

Sex Male

Practice address 521 W 57th St, 4th Floor, New York, NY, 10019

Phone (212) 265-8070

Fax (212) 523-8194

Enumeration date Feb 28, 2006

Last updated in NPPES Sep 24, 2012

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 238108 (NY) 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

What specialty is Armistead Williams?

Armistead Williams is registered in NPPES with the primary taxonomy of Neurology 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 2012-09-24.