Howland Crosswell, MD
Pediatric Hematology-Oncology · Greenville, SCNPI 1811943871
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (51.8%), speaking fees and food and beverage — rather than concentrated in one kind of arrangement. 26 manufacturers reported payments, led by Servier Pharmaceuticals LLC at 25.6% of the total. Reporting peaked in 2022 at $5,898 and has fallen 77.5% since, to $1,326 in 2024.
Across 57 payments — averaging $252.13 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Servier Pharmaceuticals LLC$4K
- Jazz Pharmaceuticals Inc.$4K
- Seagen Inc.$2K
- Pharmacosmos Therapeutics Inc.$2K
- Adaptive Biotechnologies Corporation$1K
- E.r. Squibb & Sons, L.L.C.$946
- plus $1K from 20 others
Across 92 payments — averaging $5100.27 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.
- Merck$266K
- Seagen Inc.$80K
- Takeda Pharmaceuticals U.S.A., Inc.$69K
- Gilead$41K
- Adaptive Biotechnologies Corporation$14K
What the payments were for
- Consulting fees$7,44152%
- Speaking & faculty fees$4,61532%
- Travel & lodging$3292%
- Food & beverage$1,98614%
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 |
|---|---|---|
| Servier Pharmaceuticals LLC | 3 | $3,676 |
| Jazz Pharmaceuticals Inc. | 4 | $3,665 |
| Seagen Inc. | 1 | $2,170 |
| Pharmacosmos Therapeutics Inc. | 1 | $1,500 |
| Adaptive Biotechnologies Corporation | 10 | $1,264 |
| E.r. Squibb & Sons, L.L.C. | 1 | $946 |
| Gilead(2 entities) | 5 | $147 |
| Daiichi Sankyo Inc. | 2 | $136 |
| Kyowa Kirin, Inc. | 2 | $118 |
| Mallinckrodt Enterprises LLC | 1 | $112 |
| Blueprint Medicines Corporation | 1 | $110 |
| Novartis | 4 | $110 |
| Amgen | 2 | $101 |
| Merck | 3 | $50 |
| Eisai Inc. | 2 | $44 |
| Bristol Myers Squibb | 3 | $41 |
| AstraZeneca | 2 | $30 |
| Novocure Inc. | 1 | $25 |
| Johnson & Johnson(2 entities) | 2 | $23 |
| GSK | 1 | $21 |
| Sanofi | 1 | $20 |
| Secura Bio, Inc. | 1 | $15 |
| Astellas Pharma US Inc | 1 | $13 |
| Exelixis Inc. | 1 | $13 |
| Genentech USA, Inc. | 1 | $12 |
| Clovis Oncology, Inc. | 1 | $10 |
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.
- ONCASPAR$3,575
- RYLAZE$3,500
- ADCETRIS$2,170
- Monoferric$1,500
- clonoSEQ$1,076
- INJECTAFER$125
- VYXEOS$122
- CELLEX/XTS PHOTOPHERESIS SYSTEM$112
- SANCUSO$108
- POTELIGEO$108
How this compares
$14,371 in reported general payments places this provider in the 80th percentile of 32 pediatric hematology-oncology providers in South Carolina.
See all pediatric hematology-oncology providers in South Carolina →
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 |
|---|---|---|
| Levothyroxine Sodium | 30 | $422 |
| Oxycodone Hcl | 12 | $245 |
| Promethazine Hcl | 11 | $113 |
Paid to pharmacies, not to this prescriber.
Other pediatric hematology-oncology in Greenville
- Alan AndersonGreenville$320K
- Leslie GilbertGreenville$8K
- Brianna MurphyGreenville$4K
- Nichole BryantGreenville$4K
- Aniket SahaGreenville$1K
- Rebecca CookGreenville$1K
- Chandni DarganGreenville$924
- Stephen MartinGreenville$699
- William SchmidtGreenville$0
- Shayla BergmannBeaufort$287K
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.