Arlene O. Siefker-Radtke, M.D.
NPI 1700979275ActiveIndividual· Internal Medicine, Medical Oncology· Houston, TX
Internal Medicine, Medical Oncology (M.D.) in Houston, Texas, trained at Johns Hopkins University School of Medicine (class of 1996). 94 Medicare patients in 2024, $21,348 paid; nearly all of their 73 Part D prescriptions were generic (90%). Emd Serono, Inc. was the largest of 11 companies reporting payments in 2025, $25,036 in all, mostly consulting fees.
Overview
| NPI | 1700979275 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 2, 2006 |
| Last updated in NPPES | Jun 29, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | L2652 | TX |
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 - Medical Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 94 |
|---|---|
| Services billed | 183 across 8 procedure codes |
| Paid by Medicare | $21,348 |
Part D prescriptions in 2024
| Prescriptions (claims) | 73 · 80 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $6,958 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
Medical group
- Physicians Referral ServiceHouston, TX · 2,765 clinicians
Industry payments (Open Payments)
- 2025$25,036 · 36 payments from 11 companies
- 2024$37,473 · 34 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Emd Serono, Inc. | $8,520 | 1 |
| Urogen Pharma, Inc. | $8,250 | 1 |
| Merck Sharp & Dohme LLC | $2,730 | 4 |
| Janssen Biotech, Inc. | $2,306 | 4 |
| Eli Lilly and Company | $2,020 | 4 |
What the 2025 payments were for
- Consulting Fee$23,975 · 7 payments
- Food and Beverage$911.12 · 28 payments
- Travel and Lodging$150.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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