Mei-Hwa Rose Firestone, MD
NPI 1699909093ActiveIndividual· Internal Medicine, Hematology & Oncology· Leesburg, VA
Internal Medicine, Hematology & Oncology (MD) in Leesburg, Virginia, trained at Georgetown University School of Medicine (class of 2009). In 2024 Medicare paid $1,820,247 for 268 patients, and Part D covered 969 of their prescriptions, 78% of them generic. Fennec Pharmaceuticals, Inc. was the largest of 6 companies reporting payments in 2025, $332.25 in all, mostly food and beverage.
Overview
| NPI | 1699909093 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 13, 2009 |
| Last updated in NPPES | Sep 29, 2023 |
| Certified by provider | Sep 29, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 0101251718 | VA |
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 (DC); Practitioner - Hematology/Oncology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 268 |
|---|---|
| Services billed | 89,427 across 77 procedure codes |
| Paid by Medicare | $1,820,247 |
Part D prescriptions in 2024
| Prescriptions (claims) | 969 · 1,793 30-day fills |
|---|---|
| Patients | 175 |
| Total drug cost | $1,742,159 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Loudoun Medical Group, PCLovettsville, VA · 271 clinicians
Hospital affiliations
- Inova Fairfax HospitalFalls Church, VA
- Inova Loudoun HospitalLeesburg, VA
- Reston Hospital CenterReston, VA
Industry payments (Open Payments)
- 2025$332.25 · 6 payments from 6 companies
- 2024$31.63 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Fennec Pharmaceuticals, Inc. | $197.59 | 1 |
| Janssen Biotech, Inc. | $43.32 | 1 |
| Novartis Pharmaceuticals Corporation | $27.59 | 1 |
| Merck Sharp & Dohme LLC | $21.67 | 1 |
| Array Biopharma Inc | $21.57 | 1 |
What the 2025 payments were for
- Food and Beverage$311.74 · 5 payments
- Education$20.51 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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