Darren Maehara, MD
Pulmonary Disease · Oxnard, CANPI 1700145265
Payments from drug & device makers
Across 54 payments — averaging $238.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$12K
- AstraZeneca$204
- GSK$133
- Regeneron Healthcare Solutions, Inc.$73
- Insmed, Inc.$60
- Medical Graphics Corporation$57
- plus $354 from 14 others
What the payments were for
- Travel & lodging$1,99416%
- Food & beverage$1,79114%
- Education$9,00070%
- Gifts$721%
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 |
|---|---|---|
| Intuitive Surgical | 17 | $11,977 |
| AstraZeneca | 8 | $204 |
| GSK | 6 | $133 |
| Regeneron Healthcare Solutions, Inc. | 3 | $73 |
| Insmed, Inc. | 3 | $60 |
| Medical Graphics Corporation | 1 | $57 |
| AbbVie | 2 | $39 |
| Electromed, Inc. | 2 | $34 |
| Inogen, Inc. | 1 | $33 |
| Inspire Medical Systems, Inc. | 1 | $30 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $27 |
| Boehringer Ingelheim | 1 | $27 |
| Actelion Pharmaceuticals US, Inc. | 1 | $26 |
| Baxter Healthcare | 1 | $25 |
| ANI Pharmaceuticals, Inc. | 1 | $25 |
| Azurity Pharmaceuticals, Inc. | 1 | $22 |
| Lilly USA, LLC | 1 | $22 |
| Jazz Pharmaceuticals Inc. | 1 | $19 |
| Phadia US Inc. | 1 | $15 |
| Grifols USA, LLC | 1 | $12 |
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.
- Da Vinci Surgical System$8,828
- ION$3,000
How this compares
$12,857 in reported general payments places this provider in the 80th percentile of 1,261 pulmonary disease 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 |
|---|---|---|
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 137 | $155,607 |
| Anoro ElliptaUmeclidinium Brm/Vilanterol Tr | 51 | $35,805 |
| Breo ElliptaFluticasone/Vilanterol | 51 | $33,539 |
| Breztri AerosphereBudesonide/Glycopyr/Formoterol | 24 | $28,100 |
| Stiolto RespimatTiotropium Br/Olodaterol Hcl | 20 | $13,822 |
| Wixela InhubFluticasone Propion/Salmeterol | 31 | $6,716 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 165 | $6,448 |
| Ventolin HfaAlbuterol Sulfate | 19 | $2,334 |
| Montelukast Sodium | 63 | $705 |
| Prednisone | 51 | $265 |
| Promethazine Hcl | 19 | $200 |
| Azithromycin | 32 | $185 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 15 | $100 |
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 |
|---|---|---|
| GSKTrelegy Ellipta, Anoro Ellipta, Breo Ellipta | $133 | $224,951239 claims |
| AstraZenecaBreztri Aerosphere | $204 | $28,10024 claims |
| Boehringer IngelheimStiolto Respimat | $27 | $13,82220 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 80th percentile of 1,261 pulmonary disease providers in California.
Other pulmonary disease in Oxnard
- Toby MaherLos Angeles$27.6M
- David PhamWestminster$5.9M
- Andrew WachtelLos Angeles$5.9M
- Aaron WeinbergIrvine$5.1M
- Michael RothLos Angeles$4.5M
- Namita SoodSacramento$3.7M
- Edward FedermanSan Diego$3.6M
- Sanjay VadgamaSherman Oaks$3.3M
- Rajan SaggarLos Angeles$3.3M
- Samuel LouieSacramento$2.8M
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.