NPI Portal NPI Lookup & Verification

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

Steven C Williams, M.D.

Surgery Physician in Mccomb, MS · enumerated 2007.

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

National Provider Identifier

1942412887

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Registry record

Entity type Individual (Type 1)
Name Steven C Williams
Credential M.D.
Sex Male
Practice address Mccomb, MS, 39648
Phone (601) 684-2481
Fax (601) 684-2488
Enumeration date May 4, 2007
Last updated in NPPES Jan 5, 2011

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

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 09423 (MS) 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
00115579 Medicaid MS -
1730019 Other MS UNITED HEALTHCARE
1317934 Medicaid LA -
770000345 Other MS RAILROAD MEDICARE
0055406 Other MS MISSISSIPPI SELECT

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 Steven Williams?
Steven Williams is registered in NPPES with the primary taxonomy of 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 2011-01-05.