Mark Grunwald, MD
NPI 1336144914 · Family Medicine Physician · Prairie Du Chien, WI
Mark Grunwald, MD is a Family Medicine Physician provider in Prairie Du Chien, WI (NPI 1336144914).
Provider details
- NPI number
- 1336144914
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 23439 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 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
- 2005-06-20
- Last updated
- 2008-04-09
Frequently asked questions
- What is Mark Grunwald's NPI number?
- Mark Grunwald's National Provider Identifier (NPI) is 1336144914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Grunwald's specialty?
- Mark Grunwald is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Grunwald located?
- Mark Grunwald's practice location on file with NPPES is 304 S Jackson St, Prairie Du Chien, WI 53821-1821.
- What is Mark Grunwald's phone number?
- The practice phone number listed in the NPPES registry for Mark Grunwald is (608) 326-5459.
- Is Mark Grunwald's NPI active?
- Yes — Mark Grunwald's NPI (1336144914) is active in the NPPES registry as of the last update on 2008-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.