Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karl A Duncan, M.D.

Interventional Cardiology Physician in Lake Charles, LA · enumerated 2006 · practices at Lake Charles Memorial Heart and Vascular Center.

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

National Provider Identifier

1265465017

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Registry record

Entity type Individual (Type 1)

Name Karl A Duncan

Credential M.D.

Sex Male

Practice address 1717 Oak Park Blvd Fl 2, Lake Charles, LA, 70601

Phone (337) 494-3278

Fax (337) 494-3240

Enumeration date Jul 7, 2006

Last updated in NPPES Apr 3, 2023

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 58167 (GA) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 326121 (NY) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 27186 (MS) Secondary

207UN0901X Nuclear Cardiology Physician Allopathic & Osteopathic Physicians · License 58167 (GA) Secondary

207UN0901X Nuclear Cardiology Physician Allopathic & Osteopathic Physicians · License 45842 (TN) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License MD.204124 (LA) 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
27186	Other	MS	PHYSICIAN LICENSE

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 Karl Duncan?

Karl Duncan is registered in NPPES with the primary taxonomy of Interventional Cardiology 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 2023-04-03.