David Drover, MD
Anesthesiology · Stanford, CANPI 1235279571
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (55.1%), speaking fees and food and beverage — rather than concentrated in one kind of arrangement. 4 manufacturers reported payments, led by Masimo Corporation at 59.0% of the total. Reporting peaked in 2024 at $5,325 and has fallen 94.5% since, to $295 in 2025. Among anesthesiology clinicians in CA 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 16 payments — averaging $722.14 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Masimo Corporation$7K
- Purdue Pharma L.p.$4K
- Kyowa Kirin Services Ltd$490
- Chiesi USA, Inc.$121
Across 43 payments — averaging $10,422 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Edwards Lifesciences$418K
- Masimo Corporation$28K
- Takeda Pharmaceuticals U.S.A., Inc.$2K
What the payments were for
- Consulting fees$6,37055%
- Speaking & faculty fees$4,50039%
- Food & beverage$6846%
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 |
|---|---|---|
| Masimo Corporation | 11 | $6,814 |
| Purdue Pharma L.p. | 3 | $4,130 |
| Kyowa Kirin Services Ltd | 1 | $490 |
| Chiesi USA, Inc. | 1 | $121 |
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.
- NALMEFENE HYDROCHLORIDE$4,130
- SET and rainbow SET$3,893
- SedLine$2,564
- Patient SafetyNet System$1,643
- EMMA and ISA$143
- rainbow Acoustic Monitoring$143
- CLEVIPREX$121
How this compares
$11,554 in reported general payments places this provider in the 95th percentile of 5,717 anesthesiology 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.
Other anesthesiology in Stanford
- Lawrence ChuStanford$205K
- Hendrikus LemmensStanford$200K
- Brendan CarvalhoStanford$170K
- Martin AngstStanford$99K
- William FeasterStanford$68K
- Ryan DerbyStanford$61K
- Barrett LarsonStanford$51K
- Jack JengSouth San Francisco$1.3M
- Roger PhillipsChico$434K
- David DeyhimyLaguna Hills$344K
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.