Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Brian D Williams, MD, MPH

Preventive Medicine/Occupational Environmental Medicine Physician in Jackson, MS · enumerated 2007.

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

National Provider Identifier

1811027758

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Registry record

Entity type Individual (Type 1)

Name Dr. Brian D Williams

Credential MD, MPH

Sex Male

Practice address 2500 N State St, Jackson, MS, 39216

Phone (601) 815-3511

Enumeration date Mar 7, 2007

Last updated in NPPES Aug 16, 2023

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 44204 (CO) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 250866 (NY) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 35098218 (OH) Secondary

2083P0500X Preventive Medicine/Occupational Environmental Medicine Physician Allopathic & Osteopathic Physicians · License 30535 (MS) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Brian Williams?

Brian Williams is registered in NPPES with the primary taxonomy of Preventive Medicine/Occupational Environmental Medicine 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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University Ophthalmology Associates Ophthalmology Physician · Jackson, MS NPI 1477556231 George Russell Orthopaedic Trauma Physician · Jackson, MS NPI 1629072509 Lori Reed Orthopaedic Foot and Ankle Surgery Physician · Jackson, MS NPI 1285639955 Brian Crabtree Psychiatric Pharmacist · Jackson, MS NPI 1770580961 Jack Lewin Anatomic Pathology Physician · Jackson, MS NPI 1033117445 Robin Christian Family Nurse Practitioner · Jackson, MS NPI 1245230887 John Bethea Anesthesiology Physician · Jackson, MS NPI 1568462141 Linda Brodell Ophthalmology Physician · Jackson, MS NPI 1043210321

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-16.