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

Dr. Alton Allen Williams, O.D.

Optometrist in Newark, DE · enumerated 2008.

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

National Provider Identifier

1275708224

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Registry record

Entity type Individual (Type 1)

Name Dr. Alton Allen Williams

Credential O.D.

Sex Male

Practice address Newark, DE, 19702

Phone (302) 283-1988

Fax (302) 283-1991

Enumeration date Apr 29, 2008

Last updated in NPPES Apr 29, 2008

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1132 (DE) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
0000701922	Medicaid	DE	-
410037570	Other	DE	RAILROAD MEDICARE

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 Alton Williams?

Alton Williams is registered in NPPES with the primary taxonomy of Optometrist. 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.

Other providers at this practice address

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Vision Plus of De P A Vision Therapy Optometrist · Newark, DE NPI 1881770063 Affinity Home Health Services Home Health Agency · Newark, DE NPI 1952680415

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-29.