Karen F. Stadler, MD
NPI 1659909844ActiveIndividual· Dermatology· Topeka, KS
Dermatology (MD) in Topeka, Kansas, trained at University of Missouri, Kansas City, School of Medicine (class of 2020). Their prescriptions cost Medicare Part D more than their services did: $74,639 for 203 claims, against $43,265 paid for services in 2024. Genzyme Corporation was the largest of 6 companies reporting payments in 2024, $306.47 in all, mostly food and beverage.
Overview
| NPI | 1659909844 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 1, 2020 |
| Last updated in NPPES | Jul 2, 2026 |
| Certified by provider | Jul 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 04-49718 | KS |
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 - Dermatology (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 264 |
|---|---|
| Services billed | 816 across 38 procedure codes |
| Paid by Medicare | $43,265 |
Part D prescriptions in 2024
| Prescriptions (claims) | 203 · 235 30-day fills |
|---|---|
| Patients | 102 |
| Total drug cost | $74,639 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Missouri, Kansas City, School of Medicine |
|---|---|
| Graduation year | 2020 |
| Medicare specialty | Dermatology |
Medical group
- Cotton-O'Neil Clinic Revocable TrustTopeka, KS · 666 clinicians
Hospital affiliation
- The Nebraska Medical CenterOmaha, NE
Industry payments (Open Payments)
- 2024$306.47 · 7 payments from 6 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $124.26 | 1 |
| Regeneron Healthcare Solutions, Inc. | $80.56 | 1 |
| Janssen Biotech, Inc. | $41.97 | 2 |
| Convatec Inc. | $23.35 | 1 |
| Lilly USA, LLC | $21.78 | 1 |
What the 2024 payments were for
- Food and Beverage$306.47 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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