William Smith, MD
Allergy/ Immunology · Hendersonville, TNNPI 1871559278
Payments from drug & device makers
Across 78 payments — averaging $21,591 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novartis$1.1M
- Genentech, Inc.$238K
- Sun Pharmaceutical Industries Inc.$112K
- Chugai Pharmaceutical Co., Ltd.$108K
- Vivus LLC$23K
- Pfizer$12K
- plus $48K from 15 others
What the payments were for
- Food & beverage$504100%
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 |
|---|---|---|
| Novartis | 12 | $1,142,345 |
| Genentech, Inc. | 10 | $237,964 |
| Sun Pharmaceutical Industries Inc. | 1 | $111,746 |
| Chugai Pharmaceutical Co., Ltd. | 8 | $108,466 |
| Vivus LLC | 3 | $22,804 |
| Pfizer | 5 | $12,483 |
| Mylan Technologies Inc. | 4 | $10,697 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $9,315 |
| Merck | 3 | $8,745 |
| Myovant Sciences GmbH | 2 | $8,600 |
| Shire North American Group Inc | 5 | $7,583 |
| Incyte Corporation | 1 | $1,800 |
| AbbVie | 1 | $1,101 |
| Regeneron Healthcare Solutions, Inc. | 5 | $126 |
| AstraZeneca | 6 | $101 |
| Optinose US, Inc. | 4 | $100 |
| Alk-abello, Inc | 2 | $36 |
| Teva Pharmaceuticals USA, Inc. | 2 | $31 |
| Boehringer Ingelheim | 1 | $19 |
| Hikma Pharmaceuticals USA | 1 | $14 |
| Xeris Pharmaceuticals, Inc. | 1 | $12 |
How this compares
Too few allergy/ immunology 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Dupixent SyringeDupilumab | 15 | $55,511 |
| XolairOmalizumab | 13 | $38,179 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 22 | $29,517 |
| Spiriva RespimatTiotropium Bromide | 20 | $22,924 |
| Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate | 25 | $7,089 |
| Azelastine Hcl | 83 | $5,707 |
| Montelukast Sodium | 351 | $5,369 |
| Breo ElliptaFluticasone/Vilanterol | 11 | $4,214 |
| Zafirlukast | 26 | $3,311 |
| Flunisolide | 34 | $3,201 |
| Fluticasone Propionate | 48 | $1,276 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 36 | $982 |
| Ipratropium Bromide | 29 | $908 |
| Ketorolac Tromethamine | 25 | $571 |
| Doxycycline Hyclate | 41 | $413 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Genentech, Inc.Xolair | $237,964 | $38,17913 claims |
| Boehringer IngelheimSpiriva Respimat | $19 | $22,92420 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. There are too few allergy/ immunology providers in Tennesseeon file to place this against a meaningful peer group, so we don't.
Other allergy/ immunology in Hendersonville
- Shailee MadhokKingsport$13K
- Joseph FahhoumGermantown$5K
- Irene YuanNashville$0
- Nalinchandra ShahKingsport$0
- Joe LevyMemphis$0
- Matthew KrantzNashville$0
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.