Greg Sharon, MD
Allergy & Immunology · Bloomingdale, ILNPI 1619950250
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 92.0% of the total across 576 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 35 manufacturers, the largest accounting for just 15.2% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2022 at $2,430 and has fallen 95.7% since, to $104 in 2024.
Across 576 payments — averaging $18.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Optinose US, Inc.$2K
- GSK$1K
- AstraZeneca$1K
- Takeda Pharmaceuticals U.S.A., Inc.$709
- CSL Behring$655
- AbbVie$457
- plus $5K from 29 others
What the payments were for
- Consulting fees$8008%
- Food & beverage$9,76792%
- Education$460%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Optinose US, Inc. | 64 | $1,610 |
| GSK | 108 | $1,322 |
| AstraZeneca | 64 | $1,176 |
| Takeda Pharmaceuticals U.S.A., Inc. | 33 | $709 |
| CSL Behring | 35 | $655 |
| AbbVie | 24 | $457 |
| Regeneron Healthcare Solutions, Inc. | 24 | $419 |
| Genentech USA, Inc. | 18 | $404 |
| Covis Pharma GmbH | 20 | $380 |
| Shire North American Group Inc | 19 | $376 |
| Grifols USA, LLC | 19 | $338 |
| Pharming Healthcare, Inc. | 14 | $287 |
| Boehringer Ingelheim | 15 | $283 |
| Sanofi | 12 | $263 |
| Amgen | 13 | $248 |
| Teva Pharmaceuticals USA, Inc. | 14 | $246 |
| Nestle Healthcare Nutrition Inc. | 8 | $210 |
| Pfizer | 10 | $158 |
| Bio Products Laboratory USA, Inc. | 10 | $154 |
| Novartis | 9 | $144 |
| Octapharma USA, Inc. | 3 | $118 |
| Blueprint Medicines Corporation | 4 | $109 |
| Kaleo, Inc. | 6 | $99 |
| Kedrion Biopharma Inc. | 4 | $72 |
| Alk-abello, Inc | 4 | $67 |
| QOL Medical, LLC | 8 | $57 |
| Aimmune Therapeutics, Inc. | 3 | $54 |
| Biocryst US Sales Co., LLC | 3 | $53 |
| Hospira, Inc. | 1 | $25 |
| LEO Pharma Inc. | 1 | $24 |
| Eyevance Pharmaceuticals LLC | 2 | $23 |
| Incyte Corporation | 1 | $21 |
| Biocryst Pharmaceuticals, Inc. | 1 | $19 |
| Biohaven Pharmaceutical Holding Company Ltd. | 1 | $19 |
| Phadia US Inc. | 1 | $15 |
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.
- Xhance$800
How this compares
$10,613 in reported general payments places this provider in the 75th percentile of 161 allergy & immunology providers in Illinois.
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 |
|---|---|---|
| Azelastine Hcl | 28 | $1,018 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 14 | $498 |
| Montelukast Sodium | 25 | $259 |
| Fluticasone Propionate | 13 | $90 |
| Azithromycin | 13 | $30 |
| Ondansetron OdtOndansetron | 48 | $25 |
Paid to pharmacies, not to this prescriber.
Other allergy & immunology in Bloomingdale
- Dareen SiriNormal$1.5M
- Priya BansalSaint Charles$1.3M
- Anju PetersChicago$563K
- Giselle MosnaimChicago$331K
- Patrick WinShiloh$258K
- Amanda SalihChicago$160K
- Rebecca HoffmanWilmette$160K
- Juanita MoraChicago$147K
- Sonali MajmudarAlgonquin$136K
- Zachary RubinElmhurst$133K
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.