Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William David Long, M.D.

Vascular & Interventional Radiology Physician in Alexandria, LA · enumerated 2006.

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

National Provider Identifier

1992767404

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Registry record

Entity type Individual (Type 1)

Name Dr. William David Long

Credential M.D.

Sex Male

Practice address 3704 North Blvd, Suite 1, Alexandria, LA, 71301

Phone (318) 442-8399

Fax (318) 448-9897

Enumeration date Apr 3, 2006

Last updated in NPPES May 9, 2011

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 024926 (LA) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 024926 (LA) Secondary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License 024926 (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
04446	Medicaid	LA	-
P00325542	Other	LA	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.

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Frequently asked questions

What specialty is William Long?

William Long is registered in NPPES with the primary taxonomy of Vascular & Interventional Radiology 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-05-09.