William McCann, MD
Allergy & Immunology · Asheville, NCNPI 1922098250
Payments from drug & device makers
Across 675 payments — averaging $1052.46 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$326K
- GSK$225K
- Regeneron Healthcare Solutions, Inc.$54K
- ARS Pharmaceuticals Operations, Inc.$45K
- Novartis$26K
- Genentech USA, Inc.$11K
- plus $24K from 23 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 | 387 | $325,918 |
| GSK | 58 | $224,836 |
| Regeneron Healthcare Solutions, Inc. | 82 | $54,230 |
| ARS Pharmaceuticals Operations, Inc. | 28 | $44,919 |
| Novartis | 21 | $26,072 |
| Genentech USA, Inc. | 21 | $10,676 |
| Sanofi | 13 | $9,733 |
| Amgen(2 entities) | 11 | $5,015 |
| Aimmune Therapeutics, Inc. | 6 | $3,420 |
| Astrazeneca UK Limited | 1 | $1,860 |
| Takeda Pharmaceuticals U.S.A., Inc. | 4 | $849 |
| Alk-abello, Inc | 9 | $630 |
| Blueprint Medicines Corporation | 7 | $589 |
| Eyevance Pharmaceuticals LLC | 1 | $500 |
| CSL Behring | 3 | $249 |
| Grifols USA, LLC | 3 | $159 |
| Siemens Medical Solutions USA, Inc. | 1 | $143 |
| Optinose US, Inc. | 3 | $137 |
| Aquestive Therapeutics, Inc. | 1 | $119 |
| Teva Pharmaceuticals USA, Inc. | 3 | $110 |
| Biocryst US Sales Co., LLC | 1 | $70 |
| Hospira, Inc. | 3 | $50 |
| Pfizer | 2 | $28 |
| ADMA Biomanufacturing LLC | 1 | $21 |
| Jubilant Hollisterstier LLC | 1 | $21 |
| Kaleo, Inc. | 1 | $19 |
| Aytu Biopharma, Inc. | 1 | $14 |
| Bio Products Laboratory USA, Inc. | 1 | $13 |
| Mylan Specialty L.p. | 1 | $11 |
How this compares
$710,410 in reported general payments places this provider in the 95th percentile of 140 allergy & immunology providers in North 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.
Other allergy & immunology in Asheville
- David CypcarAsheville$1.6M
- David BrownAsheville$129K
- Christopher CopenhaverAsheville$88K
- Elise CoulsonAsheville$16K
- Jordan SmallwoodAsheville$13K
- John van WyeAsheville$11K
- Craig LaforceRaleigh$7.9M
- Karen DunnRaleigh$3.3M
- Maeve OconnorCharlotte$2.2M
- Edwin KimChapel Hill$874K
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.