Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Clifford Marc Madsen, D.O.

Sports Medicine (Family Medicine) Physician in Quantico, VA · enumerated 2009.

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

National Provider Identifier

1437386943

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Registry record

Entity type Individual (Type 1)

Name Dr. Clifford Marc Madsen

Credential D.O.

Sex Male

Practice address 3259 Catlin Ave, Quantico, VA, 22134

Phone (703) 784-1725

Enumeration date Jun 11, 2009

Last updated in NPPES Dec 8, 2022

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 0102202691 (VA) Secondary

207QS0010X Sports Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 0102202691 (VA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

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 1437386943 active?

Yes, as of the latest NPPES snapshot, NPI 1437386943 is active (record last updated 2022-12-08).

How do I verify Clifford Madsen's NPI record?

Cross-check NPI 1437386943 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 2022-12-08.