John David Anczak, PAC
Physician Assistant · Eau Claire, WI
John David Anczak, PAC is a physician assistant with a practice address in Eau Claire, Wisconsin, and NPI 1881793206, issued on Sep 22, 2006. Check the license (Wisconsin 1241, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John David Anczak
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 1241 WI
10686 MN
Self-reported in NPPES; status is on the state search - Practice location
- 733 W Clairemont Ave, Eau Claire, WI 54701
- Phone
- (715) 838-5222
- Enumerated
- Sep 22, 2006
- Record last updated
- Jul 20, 2026
- Medicare enrollment
- Enrolled (PECOS I20040317001057); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 733 W Clairemont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Matthew Anderson, LPCProfessional Counselor1366698706
- Aamir Ansari, M.D.Pediatrics Physician1295918696
- Mark Attermeier, MDFamily Medicine Physician1548231442
Verify John David Anczak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 1241Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average physician assistant in 2024
681 Medicare Part D claims for 500 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa61 claims
- Cefdinir58 claims
- Cefadroxil57 claims
- Amoxicillin-Clavulanate Potass54 claims
- Doxycycline Hyclate52 claims
- Prednisone46 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 3 group practices
- Fairview ClinicsRiver Falls, WI
- Healtheast Medical Research InstituteSaint Paul, MN
- 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).
John David Anczak among 3,475 physician assistant records in Wisconsin
John David Anczak, PAC 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 76% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2000 · median 2016 among the 2,491 with a school on file
- Record last updated2026 · 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
- Brad Allar, PAEau Claire, WI 547011598795650
- Scott Gooch, PAEau Claire, WI 547011407950652
- Jeffrey Jackson, PACEau Claire, WI 547011730281429
- Richard Martin, PAEau Claire, WI 547011528176849
- Tamara Miller, PAEau Claire, WI 547011831143866
- Brenda Moore, PACEau Claire, WI 547011568557833
- Bryan Pooler, PAEau Claire, WI 547011023116878
- Rachel Quarberg, PACEau Claire, WI 547011699868075
Common questions
What is John David Anczak, PAC's NPI number?
John David Anczak, PAC's National Provider Identifier (NPI) is 1881793206, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John David Anczak, PAC located?
The NPPES record lists a practice address at 733 W Clairemont Ave, Eau Claire, WI, 54701. Phone: (715) 838-5222. Providers update this record themselves, so call before visiting.
How can I verify John David Anczak, PAC's license?
NPPES lists Wisconsin license number 1241, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does John David Anczak, PAC prescribe under Medicare Part D?
In 2024, John David Anczak, PAC had 681 Medicare Part D claims for 500 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.