Danielle Westfall, MD
Anatomic Pathology & Clinical Pathology · Thousand Oaks, CANPI 1891025896
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $120,990 of the $121,303 with a category attached, or 99.7%. Agilent Technologies, Inc. accounts for 99.7% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2021 at $52,359 and has fallen 99.9% since, to $38 in 2024. Among anatomic pathology & clinical pathology 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 10 payments — averaging $12,130 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Agilent Technologies, Inc.$121K
- AstraZeneca$209
- Roche Diagnostics Corporation$44
- Intuitive Surgical$38
- Biomerieux Inc$22
What the payments were for
- Consulting fees$120,990100%
- Food & beverage$3130%
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 |
|---|---|---|
| Agilent Technologies, Inc. | 5 | $120,990 |
| AstraZeneca | 2 | $209 |
| Roche Diagnostics Corporation | 1 | $44 |
| Intuitive Surgical | 1 | $38 |
| Biomerieux Inc | 1 | $22 |
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.
- PD-L1 IHC 22C3 pharmDx$52,150
- PD-L1 IHC 22C3$36,388
- PD-L1 IHC 28-8 pharmDx$740
- LYNPARZA$209
How this compares
$121,303 in reported general payments places this provider in the 95th percentile of 814 anatomic pathology & clinical pathology providers in California.
See all anatomic pathology & clinical pathology 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 anatomic pathology & clinical pathology in Thousand Oaks
- Eric BroxhamThousand Oaks$160K
- Regina Patricia SingsonThousand Oaks$146K
- Joshua SegalThousand Oaks$139K
- Cuauhtemoc MaganaThousand Oaks$135K
- Edward BlackmanThousand Oaks$127K
- Jianming YinThousand Oaks$126K
- Wayne SchultheisThousand Oaks$34K
- Joel FriedmanThousand Oaks$31K
- Serge AlexanianLos Angeles$3.2M
- Brian ConeLos Angeles$519K
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.