Jonathon Posthumus, MD
Allergy & Immunology · Fredericksburg, VANPI 1255536553
Payments from drug & device makers
Across 457 payments — averaging $19.03 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$2K
- GSK$2K
- Regeneron Healthcare Solutions, Inc.$859
- Sanofi$619
- Pfizer$420
- Kaleo, Inc.$377
- plus $3K from 30 others
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 |
|---|---|---|
| AstraZeneca | 97 | $1,882 |
| GSK | 93 | $1,565 |
| Regeneron Healthcare Solutions, Inc. | 42 | $859 |
| Sanofi | 29 | $619 |
| Pfizer | 24 | $420 |
| Kaleo, Inc. | 21 | $377 |
| Takeda Pharmaceuticals U.S.A., Inc. | 13 | $366 |
| Novartis | 18 | $331 |
| Genentech USA, Inc. | 21 | $273 |
| Optinose US, Inc. | 15 | $264 |
| Grifols USA, LLC | 7 | $219 |
| Amgen | 12 | $206 |
| CSL Behring | 8 | $186 |
| Pharming Healthcare, Inc. | 10 | $176 |
| Incyte Corporation | 5 | $113 |
| ARS Pharmaceuticals Operations, Inc. | 5 | $110 |
| LEO Pharma Inc. | 4 | $93 |
| Biocryst US Sales Co., LLC | 2 | $86 |
| Covis Pharma GmbH | 3 | $61 |
| Azurity Pharmaceuticals, Inc. | 3 | $61 |
| Boehringer Ingelheim | 4 | $58 |
| Shire North American Group Inc | 2 | $43 |
| Teva Pharmaceuticals USA, Inc. | 3 | $41 |
| Ionis Pharmaceuticals, Inc. | 2 | $41 |
| Sanofi-aventis U.S. LLC | 2 | $40 |
| Biocryst Pharmaceuticals, Inc. | 2 | $32 |
| Sunovion Pharmaceuticals Inc. | 1 | $22 |
| Aimmune Therapeutics, Inc. | 1 | $21 |
| Phadia US Inc. | 1 | $20 |
| Merck | 1 | $20 |
| Lilly USA, LLC | 1 | $18 |
| Blueprint Medicines Corporation | 1 | $18 |
| Alk-abello, Inc | 1 | $18 |
| Circassia Inc. | 1 | $16 |
| Galderma Laboratories, L.p. | 1 | $14 |
| Eyevance Pharmaceuticals LLC | 1 | $12 |
How this compares
$8,698 in reported general payments places this provider in the 70th percentile of 133 allergy & immunology providers in Virginia.
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.
Other allergy & immunology in Fredericksburg
- Andrew KimFredericksburg$104K
- Ahmed ButtFredericksburg$59K
- Jonathan MozenaFredericksburg$14K
- Julie AbrahamFredericksburg$11K
- Larry BorishCharlottesville$2.3M
- Charles LaneLynchburg$1.4M
- Jacqueline Eghrari-SabetVienna$1.1M
- Eric KarlinWilliamsburg$603K
- Nicholas RiderRoanoke$381K
- Oral AlpanSpringfield$193K
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.