Douglas Johnston
Allergy & Immunology · Greenville, SCNPI 1124048079
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $214,701 of the $329,453 with a category attached, or 65.2%. 30 manufacturers reported payments, led by Shire North American Group Inc at 32.6% of the total. Reporting peaked in 2019 at $153,323 and has fallen 100.0% since, to $21 in 2023. Among allergy & immunology clinicians in SC with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 606 payments — averaging $543.65 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Shire North American Group Inc$108K
- Takeda Pharmaceuticals U.S.A., Inc.$71K
- Pharming Healthcare, Inc.$48K
- CSL Behring$32K
- Biocryst Pharmaceuticals, Inc.$29K
- Biocryst US Sales Co., LLC$12K
- plus $30K from 24 others
Across 211 payments — averaging $4499.55 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.
- Shire North American Group Inc$298K
- Aimmune Therapeutics, Inc.$202K
- Biocryst Pharmaceuticals, Inc.$149K
- Takeda Pharmaceuticals U.S.A., Inc.$130K
- AstraZeneca$107K
- Novartis$29K
- plus $33K from 3 others
What the payments were for
- Consulting fees$69,22521%
- Speaking & faculty fees$214,70165%
- Travel & lodging$35,06511%
- Food & beverage$10,4513%
- Education$120%
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 |
|---|---|---|
| Shire North American Group Inc | 108 | $107,540 |
| Takeda Pharmaceuticals U.S.A., Inc. | 69 | $70,726 |
| Pharming Healthcare, Inc. | 49 | $47,728 |
| CSL Behring | 43 | $32,017 |
| Biocryst Pharmaceuticals, Inc. | 40 | $28,664 |
| Biocryst US Sales Co., LLC | 29 | $12,424 |
| Aimmune Therapeutics, Inc. | 3 | $11,888 |
| AstraZeneca | 61 | $7,343 |
| Pfizer | 35 | $4,691 |
| Genentech USA, Inc. | 13 | $2,306 |
| Adare Pharmaceuticals, Inc. | 7 | $1,458 |
| GSK | 49 | $690 |
| Kaleo, Inc. | 22 | $419 |
| Sanofi | 15 | $313 |
| Covis Pharma GmbH | 17 | $246 |
| Regeneron Healthcare Solutions, Inc. | 8 | $202 |
| Optinose US, Inc. | 5 | $183 |
| Grifols USA, LLC | 5 | $112 |
| Alk-abello, Inc | 5 | $107 |
| Amgen(2 entities) | 4 | $76 |
| Teva Pharmaceuticals USA, Inc. | 4 | $61 |
| Novartis | 4 | $58 |
| Incyte Corporation | 2 | $40 |
| Octapharma USA, Inc. | 1 | $36 |
| Phadia US Inc. | 2 | $33 |
| Gilead | 2 | $23 |
| Atricure, Inc. | 1 | $21 |
| Circassia Inc. | 1 | $19 |
| Mylan Specialty L.p. | 1 | $16 |
| Neos Therapeutics, LP | 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.
How this compares
$329,453 in reported general payments places this provider in the 95th percentile of 46 allergy & immunology providers in South Carolina.
Other allergy & immunology in Greenville
- Reid JohnstoneGreenville$13K
- Rudolph JohnstoneGreenville$10K
- Charles GreeneGreenville$9K
- Andrea LantzGreenville$9K
- James KuhlenGreenville$8K
- Shiven PatelGreenville$7K
- Dennis PaulkGreenville$5K
- Melissa AndersonGreenville$3K
- John PulciniGreenville$2K
- Erin MullaneyGreenville$2K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.