Internal Medicine, Hematology & Oncology · Rockville, MD
NPI
1972659266
Since 2007
Specialty
Internal Medicine, Hematology & Oncology
Code 207RH0003X
Group practices
1
Medicare group memberships
Hospitals
0
Hospital affiliations
1396 Piccard Dr
Rockville, MD, 20850
Phone (301) 548-5768
Groups this clinician bills Medicare through
Medicare paid, 2024
$31K
1,546 services
Medicare patients, 2024
20
Average age 73
Drug cost, 2024
$5.8M
2,422 prescriptions
Company payments, 2025
$17.02
From 1 companies
Medicare prescription drug claims, 2024
In 2024, the drug Leon C Hwang prescribed most often to Medicare patients was Anastrozole, with 252 prescriptions and refills. In total Leon C Hwang wrote 2,422 Medicare prescriptions that cost $5.8M.
| Drug |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2022-01-19.
| Claims |
|---|
| 30-day fills |
|---|
| Patients |
|---|
| Cost |
|---|
| Anastrozole Generic | 252 | 752 | 94 | $7,000 |
| Prednisone Generic | 200 | 248 | 42 | $1,655 |
| Abiraterone Acetate Generic | 151 | 154 | 25 | $17K |
| Dexamethasone Generic | 135 | 165 | 41 | $2,697 |
| Tamoxifen Citrate Generic | 80 | 238 | 27 | $1,933 |
| Procrit Epoetin Alfa | 78 | 79 | 12 | $139K |
| Ondansetron Odt Ondansetron | 62 | 62 | 45 | $649 |
| Nivestym Filgrastim-Aafi | 56 | 56 | 17 | $49K |
| Lenalidomide Generic | 54 | 54 | 16 | $620K |
| Prochlorperazine Maleate Generic | 51 | 51 | 41 | $1,155 |
| Acyclovir Generic | 50 | 119 | 17 | $1,253 |
| Gabapentin Generic | 49 | 65 | 22 | $812 |
| Hydroxyurea Generic | 45 | 107 | 14 | $1,798 |
| Brukinsa Zanubrutinib | 45 | 45 | Under 11 | $419K |
| Granix Tbo-Filgrastim | 43 | 43 | 14 | $22K |
Brand drugs: - claims; generic drugs: 1,848 claims; opioid claims: 166.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Leon C Hwang $17.02 ($17.02 in general payments such as food, travel and fees) from 1 company. The largest payer was Regeneron Healthcare Solutions, Inc. with $17.02.
| Company | Payments | Amount |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. REGN | 1 | $17.02 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.