Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Walter Edward Madsen, MD

Anatomic Pathology & Clinical Pathology Physician in Denver, CO · enumerated 2006.

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

National Provider Identifier

1417925736

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Registry record

Entity type Individual (Type 1)

Name Dr. Walter Edward Madsen

Credential MD

Sex Male

Practice address 6116 E Warren Ave, Denver, CO, 80222

Phone (303) 512-0888

Fax (303) 512-2288

Enumeration date Mar 11, 2006

Last updated in NPPES Mar 11, 2014

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 30117 (CO) 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
Z3451	Medicaid	NM	-
01301175	Medicaid	CO	-
641664	Medicaid	AZ	-
Z0736	Medicaid	UT	-

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

How do I verify Walter Madsen's NPI record?

Cross-check NPI 1417925736 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1417925736 active?

Yes, as of the latest NPPES snapshot, NPI 1417925736 is active (record last updated 2014-03-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-11.