Shaun T. Marczak, PA-C
Physician Assistant · Eau Claire, WI
Shaun T. Marczak, PA-C is a physician assistant with a practice address in Eau Claire, Wisconsin, and NPI 1275838146, issued on Jan 24, 2011. Check the license (Wisconsin 2904-23, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Shaun T. Marczak
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 2904-23 WI
2011001605 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1400 Bellinger St, Eau Claire, WI 54703
- Phone
- (715) 838-3311
- Enumerated
- Jan 24, 2011
- Record last updated
- Apr 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120404000205); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 1400 Bellinger St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Shaun T. Marczak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 2904-23Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average physician assistant in 2024
32 Medicare Part D claims for 15 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
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 one group practice
- Mayo Clinic Health System-Northwest Wisconsin Region IncEau Claire, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shaun T. Marczak among 3,475 physician assistant records in Wisconsin
Shaun T. Marczak, PA-C is one of 3,475 physician assistant records with a practice address in Wisconsin. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 36% of them.
- NPI issued2011 · 36% of these records are older, 61% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2010 · median 2016 among the 2,491 with a school on file
- Record last updated2021 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
106 physician assistant records list a practice address in Eau Claire
They are 106 of the 3,085 NPPES records with a practice address in Eau Claire, and 3,475 physician assistant records in Wisconsin.
All 3,475 in Wisconsin → Every provider in Eau Claire → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Roger Andrews, PAEau Claire, WI 547031568424562
- Sean Cabbage, PAEau Claire, WI 547031457313918
- Justin Grube, PA-CEau Claire, WI 547031811217417
- Kirk Herzog, PAEau Claire, WI 547031144282138
- Gloria Krueger, PA-CEau Claire, WI 547031639402076
- Jennifer Motto, PAEau Claire, WI 547031013980549
- Aimee Nelson, PA-CEau Claire, WI 547031811187503
- Ganesh Ram, PAEau Claire, WI 547031467456848
Common questions
What is Shaun T. Marczak, PA-C's NPI number?
Shaun T. Marczak, PA-C's National Provider Identifier (NPI) is 1275838146, issued on Jan 24, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Shaun T. Marczak, PA-C located?
The NPPES record lists a practice address at 1400 Bellinger St, Eau Claire, WI, 54703. Phone: (715) 838-3311. Providers update this record themselves, so call before visiting.
How can I verify Shaun T. Marczak, PA-C's license?
NPPES lists Wisconsin license number 2904-23, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Shaun T. Marczak, PA-C prescribe under Medicare Part D?
In 2024, Shaun T. Marczak, PA-C had 32 Medicare Part D claims for 15 beneficiaries; the average among physician assistant prescribers was 830. 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.