Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Denis A. Williams, MD

Sports Medicine (Orthopaedic Surgery) Physician in Champaign, IL · enumerated 2008.

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

National Provider Identifier

1750552881

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Registry record

Entity type Individual (Type 1)

Name Denis A. Williams

Credential MD

Sex Male

Practice address 2110 Fox Dr, Champaign, IL, 61820

Phone (217) 366-1323

Enumeration date Mar 17, 2008

Last updated in NPPES Apr 7, 2021

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 036.117930 (IL) Secondary

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 036117930 (IL) 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 Denis Williams?

Denis Williams is registered in NPPES with the primary taxonomy of Sports Medicine (Orthopaedic Surgery) 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 2021-04-07.