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Louis Kenneth Zweig, MD

Internal Medicine Physician in Arlington, VA · enumerated 2006 · practices at Northern Virginia Family Practice Associates.

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

National Provider Identifier

1730197591

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Registry record

Entity type Individual (Type 1)
Name Louis Kenneth Zweig
Credential MD
Sex Male
Practice address 2445 Army Navy Dr Ste 400, Arlington, VA, 22206
Phone (703) 379-8879
Fax (703) 998-6821
Enumeration date Aug 4, 2006
Last updated in NPPES Mar 6, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 0101227887 (VA) 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
010171270 Medicaid VA -
P00255198 Other - RR 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

Where does Louis Zweig practice?
The practice location on file with NPPES is in Arlington, VA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Louis Zweig?
The National Provider Identifier (NPI) for Louis Zweig is 1730197591, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-06.