Karl William Doerfer, MD
Otology & Neurotology Physician · Milwaukee, WI
Karl William Doerfer, MD is an otology & neurotology physician with a practice address in Milwaukee, Wisconsin, and NPI 1104245018, issued on Apr 8, 2014. Check the license (Wisconsin 64553-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Karl William Doerfer
- Credential
- MD
- Primary taxonomy
- Otology & Neurotology Physician 207YX0901X
- License numbers
- 64553-20 WI
64553 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9200 W Wisconsin Ave FL 3, Milwaukee, WI 53226
- Phone
- (414) 805-5580
- Enumerated
- Apr 8, 2014
- Record last updated
- Oct 11, 2022
- Fax
- (414) 476-4701
- Medicaid ID
- 11042245018 WI
- Medicare enrollment
- Enrolled (PECOS I20220711001112); accepts Medicare assignment
- Entity
- Type 1 · individual
7 nearest otology & neurotology physician records → All 8 in Wisconsin → Look up another NPI →
Verify Karl William Doerfer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 64553-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average otology & neurotology physician in 2024
147 Medicare Part D claims for 80 beneficiaries, against an average of 409 among the 340 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Ciprofloxacin-Dexamethasone32 claims
- Ofloxacin28 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 80.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $263.73
3 payments; by number, the most common kind was food and beverage; the largest payer was Integra LifeSciences Corporation. The 283 providers of this specialty with any payment received $2,757.03 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.
Bills Medicare through one group practice
- The Medical College OF Wisconsin IncMilwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Otology & Neurotology Physician providers in Wisconsin
There are 8 otology & neurotology physician records in Wisconsin.
All 8 in Wisconsin → Every provider in Milwaukee → Otology & Neurotology Physician nationwide →
The 7 otology & neurotology physician records with the nearest ZIP codes
- David Friedland, MD, PHDMilwaukee, WI 532261760433148
- Tirth Patel, MDMilwaukee, WI 532261285129387
- Aaron Benson, M.D.Greenfield, WI 532201285616193
- Steven Millen, MDHales Corners, WI 531301710944954
- Garrold Pyle, MDMiddleton, WI 535971689638306
- S. Donovan, M.D.Madison, WI 537131326277765
- Joseph Roche, M.D.Madison, WI 537921104020932
Common questions
What is Karl William Doerfer, MD's NPI number?
Karl William Doerfer, MD's National Provider Identifier (NPI) is 1104245018, issued on Apr 8, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Karl William Doerfer, MD located?
The NPPES record lists a practice address at 9200 W Wisconsin Ave FL 3, Milwaukee, WI, 53226. Phone: (414) 805-5580. Providers update this record themselves, so call before visiting.
How can I verify Karl William Doerfer, MD's license?
NPPES lists Wisconsin license number 64553-20, 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 Karl William Doerfer, MD prescribe under Medicare Part D?
In 2024, Karl William Doerfer, MD had 147 Medicare Part D claims for 80 beneficiaries; the average among otology & neurotology physician prescribers was 409. Part D covers Medicare prescriptions only.
What is Karl William Doerfer, MD's MIPS final score?
The 2023 MIPS final score is 80.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.