Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Nathaniel John Madsen, M.D.

Interventional Cardiology Physician in Bozeman, MT · enumerated 2007.

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

National Provider Identifier

1609927607

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Registry record

Entity type Individual (Type 1)

Name Dr. Nathaniel John Madsen

Credential M.D.

Sex Male

Practice address 937 Highland Blvd Ste 5510, Bozeman, MT, 59715

Phone (406) 414-3959

Enumeration date Jan 16, 2007

Last updated in NPPES Apr 15, 2025

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MED-PHYS-LIC-18143 (MT) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 18143 (MT) 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
1609927607	Medicaid	MT	-

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 NPI 1609927607 active?

Yes, as of the latest NPPES snapshot, NPI 1609927607 is active (record last updated 2025-04-15).

How do I verify Nathaniel Madsen's NPI record?

Cross-check NPI 1609927607 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Gyorgy Mundruczo Pulmonary Disease Physician · Bozeman, MT NPI 1487621207 Mozelle Soule Medical Physician Assistant · Bozeman, MT NPI 1053372821 Dane Sobek Cardiovascular Disease Physician · Bozeman, MT NPI 1043257306 Shauna Bethel Pulmonary Disease Physician · Bozeman, MT NPI 1770691842 Andrew Sullivan Pulmonary Disease Physician · Bozeman, MT NPI 1154412799 Preston Schneider Cardiovascular Disease Physician · Bozeman, MT NPI 1922240621 Ronald Chin Cardiovascular Disease Physician · Bozeman, MT NPI 1538451539 Alexander Taylor Cardiovascular Disease Physician · Bozeman, MT NPI 1023407806

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-15.