Vuong Nayima, DO
Allergy & Immunology · West Des Moines, IANPI 1174817134
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $24,725 of the $33,749 with a category attached, or 73.3%. AstraZeneca accounts for 75.3% of it on its own, with 40 other manufacturers making up the rest. Reporting peaked in 2022 at $14,333 and has fallen 84.2% since, to $2,259 in 2025. Among allergy & immunology clinicians in IA 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 405 payments — averaging $83.33 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$25K
- Amgen$2K
- Sanofi$771
- Pfizer$749
- Grifols USA, LLC$609
- Pharming Healthcare, Inc.$445
- plus $4K from 35 others
What the payments were for
- Consulting fees$150%
- Speaking & faculty fees$24,72573%
- Food & beverage$8,69126%
- Education$1560%
- Gifts$1620%
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.
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
$33,749 in reported general payments places this provider in the 95th percentile of 32 allergy & immunology providers in Iowa.
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 |
|---|---|---|
| XembifyImmune Globulin,gamma(Igg)klhw | 11 | $166,673 |
| FasenraBenralizumab | 19 | $118,462 |
| Gamunex-CImmune Globul G/Gly/Iga Avg 46 | 12 | $66,564 |
| Dupixent PenDupilumab | 12 | $52,850 |
| Epinephrine | 32 | $6,437 |
| Azelastine Hcl | 157 | $3,526 |
| SymbicortBudesonide/Formoterol Fumarate | 11 | $2,204 |
| Olopatadine Hcl | 31 | $1,936 |
| Fluticasone Propionate | 149 | $1,250 |
| Montelukast Sodium | 68 | $317 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 17 | $280 |
| Famotidine | 40 | $247 |
| Hydroxyzine Hcl | 13 | $105 |
| Amoxicillin | 11 | $14 |
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 |
|---|---|---|
| Grifols USA, LLCXembify, Gamunex-C | $609 | $233,23723 claims |
| AstraZenecaFasenra, Symbicort | $25,412 | $120,66530 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. Against peers, this provider's reported payments sit in the 95th percentile of 32 allergy & immunology providers in Iowa.
Other allergy & immunology in West Des Moines
- Fadi AlkhatibWest Des Moines$16K
- Ravinder AgarwalWest Des Moines$2K
- Ahmad AlshashWest Des Moines$872
- Jennifer PettsWest Des Moines$163
- Daniel HamilosMason City$11K
- Lyla SchweigerCedar Rapids$6K
- Edward NassifAmes$5K
- Holly BrownCedar Rapids$4K
- Whitney MolisDes Moines$4K
- Safia NawazDes Moines$4K
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.