Michael Koroch, PA-C, ATC
Physician Assistant · Wausau, WI
Michael Koroch, PA-C, ATC is a physician assistant with a practice address in Wausau, Wisconsin, and NPI 1508000357, issued on Apr 23, 2009. Check the license (Wisconsin 4106-23, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Koroch
- Credential
- PA-C, ATC
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 4106-23 WI
995-039 WI
Self-reported in NPPES; status is on the state search - Practice location
- 333 Pine Ridge Blvd, Wausau, WI 54401
- Phone
- (715) 847-2121
- Enumerated
- Apr 23, 2009
- Record last updated
- Jul 21, 2022
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 333 Pine Ridge Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Koroch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 4106-23Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average physician assistant in 2024
259 Medicare Part D claims for 168 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 25 claims were for opioids.
Most prescribed
- Prednisone33 claims
- Ondansetron Odt25 claims
- Cephalexin21 claims
- Hydrocodone-Acetaminophen18 claims
- Cefdinir15 claims
- Sucralfate14 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.
Michael Koroch among 3,475 physician assistant records in Wisconsin
Michael Koroch, PA-C, ATC 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 2009, is newer than 31% of them.
- NPI issued2009 · 31% of these records are older, 67% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2022 · 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).
75 physician assistant records list a practice address in Wausau
They are 75 of the 1,958 NPPES records with a practice address in Wausau, and 3,475 physician assistant records in Wisconsin.
All 3,475 in Wisconsin → Every provider in Wausau → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Sarah Becker, PAWausau, WI 544011245255090
- Susan Brown, PA-CWausau, WI 544011861446114
- Barbara Budimlija, PAWausau, WI 544011205841012
- William Fisher, PA-CWausau, WI 544011053427765
- Carla Heiden, PA CWausau, WI 544011548248727
- Daniel Jackson, P.A.Wausau, WI 544011356376230
- David Nash, PA-CWausau, WI 544011679573463
- Julie Rayburn, P.A.Wausau, WI 544011184654899
Common questions
What is Michael Koroch, PA-C, ATC's NPI number?
Michael Koroch, PA-C, ATC's National Provider Identifier (NPI) is 1508000357, issued on Apr 23, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Michael Koroch, PA-C, ATC located?
The NPPES record lists a practice address at 333 Pine Ridge Blvd, Wausau, WI, 54401. Phone: (715) 847-2121. Providers update this record themselves, so call before visiting.
How can I verify Michael Koroch, PA-C, ATC's license?
NPPES lists Wisconsin license number 4106-23, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Koroch, PA-C, ATC prescribe under Medicare Part D?
In 2024, Michael Koroch, PA-C, ATC had 259 Medicare Part D claims for 168 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.