Neil Wallen, MD
Allergy · Bristol, TNNPI 1326043373
Payments from drug & device makers
Across 580 payments — averaging $20.95 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$2K
- CSL Behring$2K
- Sanofi$1K
- GSK$1K
- Takeda Pharmaceuticals U.S.A., Inc.$1K
- Regeneron Healthcare Solutions, Inc.$1K
- plus $4K 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 | 109 | $1,968 |
| CSL Behring | 71 | $1,513 |
| Sanofi | 60 | $1,442 |
| GSK | 72 | $1,372 |
| Takeda Pharmaceuticals U.S.A., Inc. | 52 | $1,135 |
| Regeneron Healthcare Solutions, Inc. | 38 | $1,002 |
| Kaleo, Inc. | 46 | $936 |
| Amgen | 36 | $801 |
| Shire North American Group Inc | 11 | $399 |
| Biocryst US Sales Co., LLC | 12 | $238 |
| Boehringer Ingelheim | 15 | $235 |
| Grifols USA, LLC | 10 | $183 |
| Octapharma USA, Inc. | 6 | $170 |
| Pfizer | 7 | $124 |
| Novartis | 5 | $94 |
| Pharming Healthcare, Inc. | 4 | $86 |
| Teva Pharmaceuticals USA, Inc. | 4 | $85 |
| Hospira, Inc. | 3 | $77 |
| Mylan Specialty L.p. | 4 | $55 |
| Sunovion Pharmaceuticals Inc. | 3 | $45 |
| Optinose US, Inc. | 2 | $38 |
| Merck | 2 | $32 |
| Circassia Inc. | 2 | $23 |
| AbbVie | 1 | $19 |
| Biocryst Pharmaceuticals, Inc. | 1 | $19 |
| Aimmune Therapeutics, Inc. | 1 | $18 |
| Phadia US Inc. | 1 | $15 |
| Sanofi-aventis U.S. LLC | 1 | $15 |
| Hikma Pharmaceuticals USA | 1 | $14 |
How this compares
Too few allergy providers in Tennesseeto place this figure against a meaningful peer group, so we don't.
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 in Bristol
- David HagamanNashville$446K
- Emily CampbellNashville$6K
- Ryan SullivanSpring Hill$5K
- Leslie NewmanSmyrna$5K
- Chrishana OgilvieGermantown$2K
- Martha ButterfieldSmyrna$2K
- Steve ColeMemphis$1K
- Keegan SmithNashville$978
- Kimberly BergeronBrentwood$532
- Robert OwenBrentwood$494
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.