David A. Knight, MD
NPI 1598969644ActiveIndividual· Internal Medicine, Hematology & Oncology· Milwaukee, WI
Internal Medicine, Hematology & Oncology (MD) in Milwaukee, Wisconsin, trained at Creighton University School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $6,049,465 for 2,597 claims, against $268,990 paid for services in 2024. Seagen Inc. was the largest of 4 companies reporting payments in 2025, $223.90 in all, mostly food and beverage.
Overview
| NPI | 1598969644 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 13, 2007 |
| Last updated in NPPES | Sep 1, 2026 |
| Certified by provider | Sep 1, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 55540 | WI |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 036113675 | IL |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 01064963A | IN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 533 |
|---|---|
| Services billed | 4,302 across 29 procedure codes |
| Paid by Medicare | $268,990 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,597 · 4,204 30-day fills |
|---|---|
| Patients | 443 |
| Total drug cost | $6,049,465 |
| Generic share | 75% of claims |
Education and affiliations
| Medical school | Creighton University School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Froedtert South IncKenosha, WI · 161 clinicians
Hospital affiliation
- Froedtert South Inc.Kenosha, WI
Other facilities
- Horizon Home Care and HospiceHome health agency · Milwaukee, WI
Industry payments (Open Payments)
- 2025$223.90 · 5 payments from 4 companies
- 2024$116.03 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Seagen Inc. | $99.99 | 1 |
| Merck Sharp & Dohme LLC | $62.11 | 2 |
| Beone Medicines USA, Inc. | $34.16 | 1 |
| Taiho Oncology, Inc. | $27.64 | 1 |
What the 2025 payments were for
- Food and Beverage$123.91 · 4 payments
- Education$99.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 108 hematologist-oncologists in Milwaukee · All hematologist-oncologists in Wisconsin