Matthew Bowdish, MD
Allergy & Immunology · Roseville, CANPI 1770767923
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $91,220 of the $120,461 with a category attached, or 75.7%. 50 manufacturers reported payments, led by GSK at 51.6% of the total. Reporting peaked in 2019 at $39,648 and has fallen 94.5% since, to $2,188 in 2025. Among allergy & immunology clinicians in CA with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 596 payments — averaging $202.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- GSK$62K
- AstraZeneca$27K
- Boehringer Ingelheim$12K
- Pharming Healthcare, Inc.$4K
- Optinose US, Inc.$3K
- Alk-abello, Inc$2K
- plus $10K from 44 others
What the payments were for
- Consulting fees$9,2578%
- Speaking & faculty fees$91,22076%
- Travel & lodging$5,6775%
- Food & beverage$14,13012%
- Education$1780%
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
$120,461 in reported general payments places this provider in the 90th percentile of 426 allergy & immunology providers in California.
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 PenDupilumab | 106 | $415,019 |
| CuvitruImmun Glob G(Igg)/Gly/Iga Ov50 | 26 | $184,080 |
| XolairOmalizumab | 41 | $135,321 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 63 | $46,488 |
| Breo ElliptaFluticasone/Vilanterol | 56 | $22,195 |
| Breztri AerosphereBudesonide/Glycopyr/Formoterol | 20 | $19,225 |
| Spiriva RespimatTiotropium Bromide | 30 | $18,699 |
| XhanceFluticasone Propionate | 13 | $13,167 |
| Epinephrine | 67 | $12,836 |
| DuleraMometasone/Formoterol | 26 | $8,669 |
| Azelastine-FluticasoneAzelastine/Fluticasone | 67 | $8,158 |
| SymbicortBudesonide/Formoterol Fumarate | 16 | $7,321 |
| Advair HfaFluticasone Propion/Salmeterol | 23 | $6,949 |
| Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate | 21 | $5,860 |
| BreynaBudesonide/Formoterol Fumarate | 23 | $5,684 |
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 |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc.Cuvitru | $668 | $184,08026 claims |
| Genentech, Inc.Xolair | $210 | $135,32141 claims |
| GSKTrelegy Ellipta, Breo Ellipta, Arnuity Ellipta | $62,180 | $74,336145 claims |
| AstraZenecaBreztri Aerosphere, Symbicort | $27,406 | $26,54636 claims |
| Boehringer IngelheimSpiriva Respimat, Combivent Respimat | $12,341 | $24,33941 claims |
| Optinose US, Inc.Xhance | $2,860 | $13,16713 claims |
| MerckDulera | $17 | $8,66926 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 90th percentile of 426 allergy & immunology providers in California.
Other allergy & immunology in Roseville
- Chiraag PatelRoseville$21K
- Raffi TachdjianSanta Monica$3.7M
- Bob GengSan Diego$3.3M
- Vinay MehtaLaguna Niguel$1.3M
- Andrew WhiteSan Diego$752K
- Marc RiedlSan Diego$725K
- Katharine WoessnerSan Diego$581K
- Brian Modenala Jolla$453K
- Heena Shah PatelUpland$428K
- Jacob OffenbergerGranada Hills$419K
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.