Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Matthew Warren Williams, MD

Retina Specialist (Ophthalmology) Physician in Lafayette, LA · enumerated 2019.

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

National Provider Identifier

1689136608

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Registry record

Entity type Individual (Type 1)

Name Dr. Matthew Warren Williams

Credential MD

Sex Male

Practice address 1101 S College Rd Ste 304, Lafayette, LA, 70503

Phone (337) 232-2710

Fax (337) 232-6824

Enumeration date Apr 1, 2019

Last updated in NPPES Aug 22, 2025

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 335525 (LA) Secondary

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License 335525 (LA) 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
2495879	Medicaid	LA	-

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 Matthew Williams?

Matthew Williams is registered in NPPES with the primary taxonomy of Retina Specialist (Ophthalmology) 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 2025-08-22.