Margaret Sigman
Allergy & Immunology · Midlothian, VANPI 1447461108
Payments from drug & device makers
Across 870 payments — averaging $19.18 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- GSK$4K
- AstraZeneca$3K
- CSL Behring$2K
- Regeneron Healthcare Solutions, Inc.$1K
- Genentech USA, Inc.$1K
- Novartis$892
- plus $5K from 26 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 |
|---|---|---|
| GSK | 177 | $3,601 |
| AstraZeneca | 149 | $3,255 |
| CSL Behring | 90 | $1,645 |
| Regeneron Healthcare Solutions, Inc. | 72 | $1,440 |
| Genentech USA, Inc. | 78 | $1,220 |
| Novartis | 51 | $892 |
| Optinose US, Inc. | 41 | $586 |
| Sanofi | 25 | $563 |
| Grifols USA, LLC | 20 | $545 |
| Amgen | 22 | $495 |
| Kaleo, Inc. | 27 | $444 |
| Takeda Pharmaceuticals U.S.A., Inc. | 22 | $342 |
| Pfizer | 17 | $297 |
| Biocryst US Sales Co., LLC | 11 | $199 |
| Incyte Corporation | 7 | $195 |
| Teva Pharmaceuticals USA, Inc. | 11 | $173 |
| ARS Pharmaceuticals Operations, Inc. | 19 | $158 |
| Ionis Pharmaceuticals, Inc. | 5 | $106 |
| Boehringer Ingelheim | 6 | $106 |
| Aimmune Therapeutics, Inc. | 4 | $75 |
| Blueprint Medicines Corporation | 3 | $63 |
| Sanofi-aventis U.S. LLC | 1 | $57 |
| Pharming Healthcare, Inc. | 2 | $47 |
| Alk-abello, Inc | 2 | $39 |
| Paratek Pharmaceuticals, Inc. | 1 | $23 |
| Organon | 1 | $21 |
| Hikma Pharmaceuticals USA | 1 | $17 |
| Circassia Inc. | 1 | $17 |
| Greer Laboratories, Inc. | 1 | $16 |
| Shire North American Group Inc | 1 | $15 |
| Phadia US Inc. | 1 | $15 |
| Sunovion Pharmaceuticals Inc. | 1 | $13 |
How this compares
$16,683 in reported general payments places this provider in the 75th 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 Midlothian
- Barry FeinsteinMidlothian$24K
- Larry BorishCharlottesville$2.3M
- Charles LaneLynchburg$1.4M
- Jacqueline Eghrari-SabetVienna$1.1M
- Eric KarlinWilliamsburg$603K
- Nicholas RiderRoanoke$381K
- Oral AlpanSpringfield$193K
- Courtney BlairMc Lean$139K
- Emily McGowanCharlottesville$137K
- Andrew KimFredericksburg$104K
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.