Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MICHAEL JOHN SPAK MD
NPI 1831145721
Radiology - Radiological Physics in Eau Claire, WI

Q: What is Michael Spak's NPI number?

The NPI number for Michael Spak is 1831145721. It was assigned to this individual provider in the NPPES registry on May 25, 2006.

Q: What is Michael Spak's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiological Physics, with taxonomy code 2085R0205X.

Q: When was this NPI record last updated?

The NPPES record for Michael Spak was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 25, 2006

900 WEST CLAIREMONT AVENUE, EAU CLAIRE, WI 54701(715) 839-4151 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Michael John Spak Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL JOHN SPAK MD (NPI 1831145721) is an individual radiological physics provider in Eau Claire, Wisconsin, licensed in Wisconsin (20002) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1831145721

Entity TypeIndividualMale

Primary Taxonomy2085R0205X

Provider Legal NameMICHAEL JOHN SPAKCredential: MD

Location Address900 WEST CLAIREMONT AVENUEEau Claire, WI 54701

Mailing Address2715 West Frank StreetEau Claire, WI 54703 · (715) 834-5511 · Fax (715) 834-5870

Phone(715) 839-4151

Sole ProprietorNo

Enumeration DateMay 25, 2006

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1831145721 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 8

★ Primary SpecialtyRadiology · Radiological PhysicsAllopathic & Osteopathic Physicians

Taxonomy Code2085R0205X

License✔ Licensed in WI · 20002

Definition

A radiological physicist deals with the diagnostic and therapeutic applications of roentgen rays, gamma rays from sealed sources, ultrasonic radiation and radio-frequency radiation, as well as the equipment associated with their production and use, including radiation safety.

Also ListedRadiology · Body ImagingTaxonomy 2085B0100X · License 20002 (WI), 101042 (MN)

Also ListedRadiology · NeuroradiologyTaxonomy 2085N0700X · License 20002 (WI), 101042 (MN)

Also ListedRadiology · Nuclear RadiologyTaxonomy 2085N0904X · License 20002 (WI), 101042 (MN)

Also ListedRadiology · Pediatric RadiologyTaxonomy 2085P0229X · License 20002 (WI), 101042 (MN)

Also ListedRadiology · Diagnostic RadiologyTaxonomy 2085R0202X · License 20002 (WI), 101042 (MN)

Also ListedRadiology · Vascular & Interventional RadiologyTaxonomy 2085R0204X · License 20002 (WI), 101042 (MN)

Also ListedRadiology · Diagnostic UltrasoundTaxonomy 2085U0001X · License 20002 (WI), 101042 (MN)

900 WEST CLAIREMONT AVENUE, Eau Claire, WI 54701

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Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. MARK ALAN AUGUSTYN MD

Radiology (Diagnostic Radiology)