Karina D'Souza, MD, MPH
NPI 1427474998ActiveIndividual· Internal Medicine, Hematology & Oncology· Oakland, CA
Internal Medicine, Hematology & Oncology (MD, MPH) with Alameda Health System, practicing in Oakland, California. Their prescriptions cost Medicare Part D more than their services did: $431,953 for 258 claims, against $12,574 paid for services in 2024. Pfizer Inc. reported $131.99 in payments in 2025, mostly food and beverage. Lists Alameda Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1427474998 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MPH |
| Sole proprietor | Yes |
| NPI issued | Mar 8, 2014 |
| Last updated in NPPES | Sep 2, 2020 |
| Certified by provider | Sep 2, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A166474 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | NY |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 54 |
|---|---|
| Services billed | 110 across 11 procedure codes |
| Paid by Medicare | $12,574 |
Part D prescriptions in 2024
| Prescriptions (claims) | 258 · 316 30-day fills |
|---|---|
| Patients | 47 |
| Total drug cost | $431,953 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Hematology/Oncology |
Medical group
- Alameda Health SystemOakland, CA · 601 clinicians
Hospital affiliations
- Alameda HospitalAlameda, CA
- Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CA
- Highland HospitalOakland, CA
Industry payments (Open Payments)
- 2025$131.99 · 1 payment from 1 company
- 2024$100.05 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $131.99 | 1 |
What the 2025 payments were for
- Food and Beverage$131.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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