Mark D. Westfall, D.O.
Emergency Medicine Physician · Neenah, WI
Mark D. Westfall, D.O. is an emergency medicine physician with a practice address in Neenah, Wisconsin, and NPI 1174566939, issued on Jun 13, 2006. Check the license (Wisconsin 38501-21, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark D. Westfall
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 38501-21 WI
Self-reported in NPPES; status is on the state search - Practice location
- 130 2ND St, Neenah, WI 54956
- Phone
- (920) 729-3100
- Enumerated
- Jun 13, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 30082900 WI
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 130 2ND St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Roshani AryalStudent in an Organized Health Care Education/Training Program1972426435
- Crystal Bales, DNP, RN, CPNPPediatric Nurse Practitioner1376094664
Verify Mark D. Westfall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 38501-21Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark D. Westfall among 1,464 emergency medicine physician records in Wisconsin
Mark D. Westfall, D.O. is one of 1,464 emergency medicine physician records with a practice address in Wisconsin. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2007 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Wisconsin
There are 1,464 emergency medicine physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,464 in Wisconsin → Every provider in Neenah → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Joseph Charais, D.O.Neenah, WI 549561538195599
- Paul Duscher, D.O.Neenah, WI 549561417150863
- Christopher Hugo, M.D.Neenah, WI 549561679515472
- David Krueger, M.D.Neenah, WI 549561821025081
- David Hale, MDNew London, WI 549611811943509
- Carolyn Hellman, D.O.New London, WI 549611497789929
- Manuel Mendoza, MDNew London, WI 549611740269158
- Robert Prahl, D.O.New London, WI 549611598074429
Common questions
What is Mark D. Westfall, D.O.'s NPI number?
Mark D. Westfall, D.O.'s National Provider Identifier (NPI) is 1174566939, issued on Jun 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark D. Westfall, D.O. located?
The NPPES record lists a practice address at 130 2ND St, Neenah, WI, 54956. Phone: (920) 729-3100. Providers update this record themselves, so call before visiting.
How can I verify Mark D. Westfall, D.O.'s license?
NPPES lists Wisconsin license number 38501-21, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.