Adam Jan Olszewski, M.D.
NPI 1467436915ActiveIndividual· Internal Medicine, Hematology & Oncology· Providence, RI
Internal Medicine, Hematology & Oncology (M.D.) with Rhode Island Hospital, practicing in Providence, Rhode Island. Their prescriptions cost Medicare Part D more than their services did: $1,557,520 for 596 claims, against $32,825 paid for services in 2024. Incyte Corporation was the largest of 9 companies reporting payments in 2025, $26,291 in all, mostly consulting fees. Lists Newport Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1467436915 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 29, 2005 |
| Last updated in NPPES | Jul 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | MD11974 | RI |
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 (RI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 156 |
|---|---|
| Services billed | 425 across 20 procedure codes |
| Paid by Medicare | $32,825 |
Part D prescriptions in 2024
| Prescriptions (claims) | 596 · 810 30-day fills |
|---|---|
| Patients | 98 |
| Total drug cost | $1,557,520 |
| Generic share | 71% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Rhode Island HospitalProvidence, RI · 437 clinicians
Hospital affiliations
- Newport HospitalNewport, RI
- Rhode Island HospitalProvidence, RI
- The Miriam HospitalProvidence, RI
Industry payments (Open Payments)
- 2025$26,291 · 33 payments from 9 companies
- 2024$17,030 · 17 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Incyte Corporation | $8,967 | 9 |
| F. Hoffmann-La Roche Ag | $4,920 | 3 |
| Genmab U.S., Inc. | $4,386 | 6 |
| E.R. Squibb & Sons, L.L.C. | $3,350 | 2 |
| Regeneron Pharmaceuticals, Inc. | $2,916 | 5 |
What the 2025 payments were for
- Consulting Fee$22,596 · 9 payments
- Travel and Lodging$2,712 · 6 payments
- Food and Beverage$984.01 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Hematology & Oncology providers in Rhode Island →