Przemyslaw Twardowski, MD
NPI 1942317987ActiveIndividual· Internal Medicine, Medical Oncology· Santa Monica, CA
Internal Medicine, Medical Oncology (MD) in Santa Monica, California, trained at University of Missouri, Kansas City, School of Medicine (class of 1996). 299 Medicare patients in 2024, $123,615 paid; nearly all of their 82 Part D prescriptions were generic (99%). Pfizer Inc. was the largest of 14 companies reporting payments in 2025, $142,365 in all, mostly speaking and faculty fees.
Overview
| NPI | 1942317987 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 24, 2006 |
| Last updated in NPPES | Apr 20, 2021 |
| Certified by provider | Apr 20, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | A66171 | CA |
| Internal Medicine | 207R00000X | A66171 | CA |
| Internal Medicine, Hematology | 207RH0000X | A66171 | CA |
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 - Medical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 299 |
|---|---|
| Services billed | 1,564 across 11 procedure codes |
| Paid by Medicare | $123,615 |
Part D prescriptions in 2024
| Prescriptions (claims) | 82 · 131 30-day fills |
|---|---|
| Patients | 36 |
| Total drug cost | $782.37 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | University of Missouri, Kansas City, School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Providence Saint Johns Medical FoundationSanta Monica, CA · 281 clinicians
Hospital affiliations
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
- Saint John's Health CenterSanta Monica, CA
Industry payments (Open Payments)
- 2025$142,365 · 158 payments from 14 companies
- 2024$167,493 · 178 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $60,369 | 46 |
| Janssen Biotech, Inc. | $30,372 | 44 |
| Bayer Healthcare Pharmaceuticals Inc. | $27,459 | 18 |
| Novartis Pharmaceuticals Corporation | $13,406 | 19 |
| Astellas Pharma US Inc | $9,802 | 10 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$84,405 · 28 payments
- Consulting Fee$43,906 · 18 payments
- Travel and Lodging$10,611 · 41 payments
- Food and Beverage$3,442 · 71 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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