Mark R. Zellmer, PA-C
Medical Physician Assistant · Whitehall, WI
Mark R. Zellmer, PA-C is a medical physician assistant with a practice address in Whitehall, Wisconsin, and NPI 1023013364, issued on Jun 14, 2005. Check the license (Wisconsin 507, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark R. Zellmer
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License numbers
- 507 WI
8874 MN
Self-reported in NPPES; status is on the state search - Practice location
- 18606 Ervin St, Whitehall, WI 54773
- Phone
- (715) 538-4355
- Enumerated
- Jun 14, 2005
- Record last updated
- Feb 8, 2023
- Medicaid IDs
- 874650800 MN
42918400 WI - Medicare enrollment
- Enrolled (PECOS I20040601001433); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 687 in Wisconsin → Look up another NPI →
Also registered at 18606 Ervin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tanya Mudgett, APNPFamily Nurse Practitioner1114438348
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Verify Mark R. Zellmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 507Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average medical physician assistant in 2024
170 Medicare Part D claims for 42 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Tamsulosin Hcl16 claims
- Eliquis12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- St Joseph's Health Services IncHillsboro, WI
- Tri-County Memorial Hospital IncWhitehall, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark R. Zellmer among 687 medical physician assistant records in Wisconsin
Mark R. Zellmer, PA-C is one of 687 medical physician assistant 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. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1983 · median 2016 among the 479 with a school on file
- Record last updated2023 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 medical physician assistant records list a practice address in Whitehall
They are 6 of the 86 NPPES records with a practice address in Whitehall, and 687 medical physician assistant records in Wisconsin.
All 687 in Wisconsin → Every provider in Whitehall → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Angela House, PAWhitehall, WI 547731396741823
- Caitlin Luttropp, PA-CWhitehall, WI 547731346807294
- Douglas Moericke, PAWhitehall, WI 547731366446841
- Tayla PerottiWhitehall, WI 547731578253001
- Bethany Yard, PA-CWhitehall, WI 547731386944502
- Erika Carrier, PA-CAshland, WI 548061225409774
- Bradley Schauer, PACornell, WI 547321235130089
- George Kmetz, PA-CChippewa Falls, WI 547291437178019
Common questions
What is Mark R. Zellmer, PA-C's NPI number?
Mark R. Zellmer, PA-C's National Provider Identifier (NPI) is 1023013364, issued on Jun 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark R. Zellmer, PA-C located?
The NPPES record lists a practice address at 18606 Ervin St, Whitehall, WI, 54773. Phone: (715) 538-4355. Providers update this record themselves, so call before visiting.
How can I verify Mark R. Zellmer, PA-C's license?
NPPES lists Wisconsin license number 507, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Mark R. Zellmer, PA-C prescribe under Medicare Part D?
In 2024, Mark R. Zellmer, PA-C had 170 Medicare Part D claims for 42 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.