Michael Spak, MD
NPI 1831145721 · Radiological Physics Physician · Eau Claire, WI
Michael Spak, MD is a Radiological Physics Physician provider in Eau Claire, WI (NPI 1831145721).
Provider details
- NPI number
- 1831145721
- Entity type
- Individual
- Primary specialty
- Radiological Physics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- 20002 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-25
- Last updated
- 2025-09-11
Frequently asked questions
- What is Michael Spak's NPI number?
- Michael Spak's National Provider Identifier (NPI) is 1831145721, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Spak's specialty?
- Michael Spak is listed in the NPPES registry with a primary specialty of Radiological Physics Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Spak located?
- Michael Spak's practice location on file with NPPES is 900 West Clairemont Avenue, Eau Claire, WI 54701.
- What is Michael Spak's phone number?
- The practice phone number listed in the NPPES registry for Michael Spak is (715) 839-4151.
- Is Michael Spak's NPI active?
- Yes — Michael Spak's NPI (1831145721) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.