NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Brett O Brown, MD

Internal Medicine Physician in Columbus, MS · enumerated 2006 · practices at Mcclanahan and Vallette Surgical Associates, Pllc.

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

National Provider Identifier

1841221702

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Brett O Brown
Credential MD
Sex Male
Practice address 2600 5th St N, Columbus, MS, 39705
Phone (662) 244-2960
Fax (662) 244-2964
Enumeration date Jul 6, 2006
Last updated in NPPES Oct 24, 2016

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 12485 (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
110123707 Other MS RAILROAD MEDICARE
00116150 Medicaid MS -

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 is the NPI number for Brett Brown?
The National Provider Identifier (NPI) for Brett Brown is 1841221702, a Type 1 (individual) record in the CMS NPPES registry.
Where does Brett Brown practice?
The practice location on file with NPPES is in Columbus, MS. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-24.