Karl William Doerfer, MD
NPI 1104245018ActiveIndividual· Otolaryngology, Otology & Neurotology· Milwaukee, WI
Otolaryngology, Otology & Neurotology (MD) with The Medical College of Wisconsin Inc and 1 other group, practicing in Milwaukee, Wisconsin. 133 Medicare patients in 2024, $26,768 paid; nearly all of their 147 Part D prescriptions were generic (90%). Stryker Corporation was the largest of 4 companies reporting payments in 2025, $2,537 in all, mostly travel and lodging. Lists Community Memorial Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1104245018 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 8, 2014 |
| Last updated in NPPES | Oct 11, 2022 |
| Certified by provider | Oct 11, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Otolaryngology, Otology & Neurotology Primary | 207YX0901X | 64553-20 | WI |
| Otolaryngology, Pediatric Otolaryngology | 207YP0228X | 64553 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Otolaryngology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 133 |
|---|---|
| Services billed | 283 across 31 procedure codes |
| Paid by Medicare | $26,768 |
Part D prescriptions in 2024
| Prescriptions (claims) | 147 · 191 30-day fills |
|---|---|
| Patients | 80 |
| Total drug cost | $6,015 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Otolaryngology |
Medical groups
- The Medical College of Wisconsin IncMilwaukee, WI · 2,115 clinicians
- Froedtert Andthe Medical College of Wisconsin Community Physicians IncWauwatosa, WI · 1,285 clinicians
Hospital affiliations
- Community Memorial HospitalMenomonee Falls, WI
- Froedtert Memorial Lutheran HospitalMilwaukee, WI
Industry payments (Open Payments)
- 2025$2,537 · 15 payments from 4 companies
- 2024$263.73 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $1,306 | 10 |
| Advanced Bionics, LLC | $1,019 | 2 |
| Cochlear Americas | $176.70 | 2 |
| Med-El Corporation | $36.25 | 1 |
What the 2025 payments were for
- Travel and Lodging$1,794 · 5 payments
- Food and Beverage$743.29 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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