Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brian James Mackenzie, M.D.

Internal Medicine Physician in Greensboro, NC · enumerated 2006.

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

National Provider Identifier

1841234259

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Registry record

Entity type Individual (Type 1)

Name Brian James Mackenzie

Credential M.D.

Sex Male

Practice address 1511 Westover Ter, Suite 201, Greensboro, NC, 27408

Phone (336) 373-0611

Fax (336) 533-0866

Enumeration date Jun 15, 2006

Last updated in NPPES Oct 26, 2009

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 200401651 (NC) Primary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 200401651 (NC) Secondary

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
139EY	Other	NC	BLUE CROSS BLUE SHIELD
193227	Other	NC	MEDCOST
5900835	Medicaid	NC	-
P00223735	Other	NC	RAILROAD MEDICARE

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

Is NPI 1841234259 active?

Yes, as of the latest NPPES snapshot, NPI 1841234259 is active (record last updated 2009-10-26).

How do I verify Brian Mackenzie's NPI record?

Cross-check NPI 1841234259 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-26.