Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Matthew Holst, D.O.

Emergency Medicine Physician in Duluth, MN · enumerated 2006.

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

National Provider Identifier

1669442406

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Registry record

Entity type Individual (Type 1)

Name Dr. John Matthew Holst

Credential D.O.

Sex Male

Practice address 407 E 3rd St, Essentia Health St. Mary'S Medical Center, Duluth, MN, 55805

Phone (218) 786-4357

Enumeration date Jan 24, 2006

Last updated in NPPES Jan 14, 2021

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 0102201761 (VA) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 56179 (MN) 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

Other identifiers

Identifier	Type	State	Issuer
1669442406	Medicaid	MN	-
1669442406	Medicaid	MI	-
1669442406	Medicaid	WI	-

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 John Holst's NPI record?

Cross-check NPI 1669442406 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669442406 active?

Yes, as of the latest NPPES snapshot, NPI 1669442406 is active (record last updated 2021-01-14).

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Traci Rogers Family Nurse Practitioner · Duluth, MN NPI 1841293347 Debbi Peters Neonatal Nurse Practitioner · Duluth, MN NPI 1003890138 Patrick Riley Physician Assistant · Duluth, MN NPI 1790765253 Peter Chase Emergency Medicine Physician · Duluth, MN NPI 1063485563 Michael Sassman Vascular & Interventional Radiology Physician · Duluth, MN NPI 1841263803 Lynn Howard Emergency Medicine Physician · Duluth, MN NPI 1942276209 John Degelau Hospitalist Physician · Duluth, MN NPI 1063489375 George Andrews Pharmacist · Duluth, MN NPI 1891757324

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-14.