William Wierda, PhD
Hematology & Oncology · Houston, TXNPI 1497848279
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $37,138 of the $50,804 with a category attached, or 73.1%. 17 manufacturers reported payments, led by Hikma Pharmaceuticals USA at 38.0% of the total. Reporting peaked in 2023 at $36,829 and has fallen 97.1% since, to $1,058 in 2025.
Across 118 payments — averaging $430.54 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Hikma Pharmaceuticals USA$19K
- AbbVie$18K
- Eli Lilly$6K
- AstraZeneca$3K
- F. Hoffmann-la Roche AG$2K
- Genentech, Inc.$714
- plus $2K from 11 others
Across 251 payments — averaging $233,657 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- AstraZeneca$52.3M
- Bristol Myers Squibb$2.6M
- Eli Lilly$2M
- Pharmacyclics LLC, An Abbvie Company$615K
- AbbVie$525K
- Acerta Pharma LLC$203K
- plus $387K from 5 others
What the payments were for
- Consulting fees$790%
- Speaking & faculty fees$8,85217%
- Travel & lodging$37,13873%
- Food & beverage$4,7369%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Hikma Pharmaceuticals USA | 5 | $19,287 |
| AbbVie | 19 | $17,861 |
| Eli Lilly | 36 | $6,066 |
| AstraZeneca | 24 | $2,827 |
| F. Hoffmann-la Roche AG | 2 | $2,352 |
| Genentech, Inc. | 8 | $714 |
| Bristol Myers Squibb | 4 | $361 |
| Adaptive Biotechnologies Corporation | 3 | $241 |
| Lilly USA, LLC | 2 | $234 |
| Johnson & Johnson | 3 | $150 |
| Beigene USA, Inc. | 2 | $144 |
| Sobi, Inc | 2 | $133 |
| Novartis | 1 | $125 |
| Astrazeneca UK Limited | 2 | $120 |
| Apellis Pharmaceuticals, Inc. | 1 | $104 |
| Genentech USA, Inc. | 3 | $73 |
| Pfizer | 1 | $13 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
How this compares
$50,804 in reported general payments places this provider in the 85th percentile of 838 hematology & oncology providers in Texas.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| VenclextaVenetoclax | 31 | $328,862 |
| CalquenceAcalabrutinib Maleate | 19 | $227,048 |
| Posaconazole | 13 | $13,454 |
| ValacyclovirValacyclovir Hcl | 28 | $752 |
| Levofloxacin | 17 | $166 |
| Allopurinol | 12 | $78 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AbbVieVenclexta | $17,861 | $328,86231 claims |
| AstraZenecaCalquence | $2,827 | $227,04819 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 85th percentile of 838 hematology & oncology providers in Texas.
Other hematology & oncology in Houston
- Devesh PandyaHouston$1.8M
- Elias JabbourHouston$1.3M
- Naval DaverHouston$853K
- Jorge Cortes-FrancoHouston$627K
- Courtney DinardoHouston$478K
- Prithviraj BoseHouston$463K
- Milind JavleHouston$326K
- Loretta NastoupilHouston$309K
- Boyu HuHouston$281K
- Luis CamachoHouston$276K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.