Monica El-Masry, M.D.
NPI 1578797171ActiveIndividual· Internal Medicine, Hematology & Oncology· Simi Valley, CA
Internal Medicine, Hematology & Oncology (M.D.) in Simi Valley, California, trained at University of California, Geffen School of Medicine (class of 2009). Their prescriptions cost Medicare Part D more than their services did: $259,149 for 120 claims, against $29,105 paid for services in 2024. Novocure Inc. was the largest of 3 companies reporting payments in 2025, $106.14 in all, mostly food and beverage.
Overview
| NPI | 1578797171 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 11, 2009 |
| Last updated in NPPES | Oct 30, 2025 |
| Certified by provider | Oct 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A114528 | CA |
| Internal Medicine | 207R00000X | A114528 | CA |
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 | 71 |
|---|---|
| Services billed | 361 across 14 procedure codes |
| Paid by Medicare | $29,105 |
Part D prescriptions in 2024
| Prescriptions (claims) | 120 · 198 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $259,149 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Hospital affiliations
- Adventist Health Simi ValleySimi Valley, CA
- Los Robles Hospital & Medical CenterThousand Oaks, CA
Industry payments (Open Payments)
- 2025$106.14 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novocure Inc. | $40.85 | 1 |
| Caris Mpi, Inc. | $34.64 | 1 |
| Pfizer Inc. | $30.65 | 1 |
What the 2025 payments were for
- Food and Beverage$75.49 · 2 payments
- Education$30.65 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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