Michael Charles Janowak, MD
Otolaryngology Physician · Oconomowoc, WI
Michael Charles Janowak, MD is an otolaryngology physician with a practice address in Oconomowoc, Wisconsin, and NPI 1285601070, issued on Mar 1, 2006. Check the license (Wisconsin 18235, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Michael Charles Janowak
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 18235 WI
Self-reported in NPPES; status is on the state search - Practice location
- 888 Thackeray Trl, Oconomowoc, WI 53066
- Phone
- (262) 567-0505
- Enumerated
- Mar 1, 2006
- Record last updated
- Jan 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (262) 567-0778
- Medicaid ID
- 30102900 WI
- Medicare enrollment
- Enrolled (PECOS I20101221000523); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1972
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 231 in Wisconsin → Look up another NPI →
Also registered at 888 Thackeray Trl
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Charles Janowak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 18235Check 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 otolaryngology physician in 2024
441 Medicare Part D claims for 216 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D.
Most prescribed
- Fluticasone Propionate93 claims
- Azithromycin60 claims
- Amoxicillin54 claims
- Methylprednisolone44 claims
- Chlorhexidine Gluconate36 claims
- Doxycycline Hyclate22 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.
Industry payments in 2024: $164.98
3 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Michael Charles Janowak among 231 otolaryngology physician records in Wisconsin
Michael Charles Janowak, MD is one of 231 otolaryngology physician records with a practice address in Wisconsin. 73% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 45% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1972 · median 2004 among the 147 with a school on file
- Record last updated2013 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Wisconsin
There are 231 otolaryngology physician records in Wisconsin.
All 231 in Wisconsin → Every provider in Oconomowoc → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Donald Blatnik, M.D.Oconomowoc, WI 530661700027810
- Mark Flick, DOOconomowoc, WI 530661780799841
- Paul LambertSummit, WI 530661265886949
- Rebecca Mahoney, DOSummit, WI 530661205490562
- Dean Martinelli, MDOconomowoc, WI 530661932174117
- Evan Cretney, MDSheboygan, WI 530811528563442
- Casey Flanary, M.D.Menomonee Falls, WI 530511467431254
- Richard Grunke, M.D.Menomonee Falls, WI 530511992737316
Common questions
What is Michael Charles Janowak, MD's NPI number?
Michael Charles Janowak, MD's National Provider Identifier (NPI) is 1285601070, issued on Mar 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Charles Janowak, MD located?
The NPPES record lists a practice address at 888 Thackeray Trl, Oconomowoc, WI, 53066. Phone: (262) 567-0505. Providers update this record themselves, so call before visiting.
How can I verify Michael Charles Janowak, MD's license?
NPPES lists Wisconsin license number 18235, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Charles Janowak, MD prescribe under Medicare Part D?
In 2024, Michael Charles Janowak, MD had 441 Medicare Part D claims for 216 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.