Diane Jennifer Prager, MD
NPI 1003883562ActiveIndividual· Internal Medicine, Hematology & Oncology· Torrance, CA
Internal Medicine, Hematology & Oncology (MD) with The Regents of the University of California, practicing in Torrance, California. In 2024 Medicare paid $1,105,110 for 378 patients, and Part D covered 153 of their prescriptions, 80% of them generic. Pfizer Inc. reported $30.65 in payments in 2025, mostly education. Lists Ronald Reagan UCLA Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1003883562 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 3, 2006 |
| Last updated in NPPES | Dec 6, 2023 |
| Certified by provider | Dec 6, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A49254 | CA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 036115134 | IL |
| Internal Medicine, Medical Oncology | 207RX0202X | A49254 | 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 | 378 |
|---|---|
| Services billed | 59,013 across 121 procedure codes |
| Paid by Medicare | $1,105,110 |
Part D prescriptions in 2024
| Prescriptions (claims) | 153 · 228 30-day fills |
|---|---|
| Patients | 41 |
| Total drug cost | $151,335 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 clinicians
Hospital affiliations
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
- Santa Monica - UCLA Med Ctr & Orthopaedic HospitalSanta Monica, CA
- UCLA West Valley Medical CenterWest Hills, CA
Industry payments (Open Payments)
- 2025$30.65 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $30.65 | 1 |
What the 2025 payments were for
- Education$30.65 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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