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Mark Westfall, D.O.
NPI 1174566939 · Emergency Medicine Physician · Neenah, WI
Mark Westfall, D.O. is a Emergency Medicine Physician provider in Neenah, WI (NPI 1174566939).
Provider details
- NPI number
- 1174566939
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 38501-21 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
130 2nd St
Neenah, WI 54956-2883
Phone: (920) 729-3100
Approximate (ZIP-level) locationGet directions
Mailing address
200 E Washington St
Appleton, WI 54911-5490
Registry dates
- Enumerated
- 2006-06-13
- Last updated
- 2007-07-09
Frequently asked questions
- What is Mark Westfall's NPI number?
- Mark Westfall's National Provider Identifier (NPI) is 1174566939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Westfall's specialty?
- Mark Westfall is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Westfall located?
- Mark Westfall's practice location on file with NPPES is 130 2nd St, Neenah, WI 54956-2883.
- What is Mark Westfall's phone number?
- The practice phone number listed in the NPPES registry for Mark Westfall is (920) 729-3100.
- Is Mark Westfall's NPI active?
- Yes — Mark Westfall's NPI (1174566939) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.