Gregory Mayzus, PA
Physician Assistant · Elkhorn, WI
Gregory Mayzus, PA is a physician assistant with a practice address in Elkhorn, Wisconsin, and NPI 1851164891, issued on Nov 1, 2023. Check the license (Wisconsin 7477, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Mayzus
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 7477 WI
Self-reported in NPPES; status is on the state search - Practice location
- W3985 County Road NN, Elkhorn, WI 53121
- Phone
- (262) 741-2000
- Enumerated
- Nov 1, 2023
- Record last updated
- Nov 28, 2023
- Medicaid ID
- 100257455 WI
- Medicare enrollment
- Enrolled (PECOS I20231206002758); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at W3985 County Road NN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory Mayzus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 7477Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average physician assistant in 2024
137 Medicare Part D claims for 65 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Furosemide13 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 one group practice
- Aurora Medical Group, Inc.Milwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Mayzus among 3,475 physician assistant records in Wisconsin
Gregory Mayzus, PA 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 2023, is newer than 86% of them.
- NPI issued2023 · 86% of these records are older, 10% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2023 · median 2016 among the 2,491 with a school on file
- Record last updated2023 · 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).
10 physician assistant records list a practice address in Elkhorn
They are 10 of the 372 NPPES records with a practice address in Elkhorn, and 3,475 physician assistant records in Wisconsin.
All 3,475 in Wisconsin → Every provider in Elkhorn → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Lindsey Burgess, PA-CElkhorn, WI 531211992137012
- Holly Crowley, PA-CElkhorn, WI 531211457791055
- Laura Hobbs, PA-CElkhorn, WI 531211164539789
- Alyssa Lebanowski, PA-CElkhorn, WI 531211407649080
- Alexander Neils, PA-CElkhorn, WI 531211154980514
- Gabriella NortonElkhorn, WI 531211235070806
- Harrison PhamElkhorn, WI 531211386257194
- Amanda Pipp, PA-CElkhorn, WI 531211780068627
Common questions
What is Gregory Mayzus, PA's NPI number?
Gregory Mayzus, PA's National Provider Identifier (NPI) is 1851164891, issued on Nov 1, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Mayzus, PA located?
The NPPES record lists a practice address at W3985 County Road NN, Elkhorn, WI, 53121. Phone: (262) 741-2000. Providers update this record themselves, so call before visiting.
How can I verify Gregory Mayzus, PA's license?
NPPES lists Wisconsin license number 7477, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Mayzus, PA prescribe under Medicare Part D?
In 2024, Gregory Mayzus, PA had 137 Medicare Part D claims for 65 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.