Anthony Sisk, DO
Anatomic Pathology · Los Angeles, CANPI 1619294923
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $77,915 of the $79,487 with a category attached, or 98.0%. Agilent Technologies, Inc. accounts for 80.3% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2021 at $49,590 and has fallen 85.9% since, to $6,972 in 2024. Among anatomic pathology 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 23 payments — averaging $3455.95 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Agilent Technologies, Inc.$64K
- Leica Microsystems Inc.$9K
- AbbVie$7K
What the payments were for
- Consulting fees$77,91598%
- Travel & lodging$1,0831%
- Food & beverage$4891%
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. | 8 | $63,815 |
| Leica Microsystems Inc. | 6 | $8,700 |
| AbbVie | 9 | $6,972 |
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$49,590
- PD-L1 IHC 28-8 pharmDx$8,040
- Elahere$6,891
- DIGITAL MICROSCOPES$5,575
- SCANSCOPE (510K)$3,125
How this compares
$79,487 in reported general payments places this provider in the 90th percentile of 154 anatomic 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 in Los Angeles
- Peter TontonozLos Angeles$13.6M
- Sheeja PullarkatLos Angeles$253K
- Michael PressLos Angeles$76K
- Dinesh RaoLos Angeles$54K
- Jonathan ZuckermanLos Angeles$24K
- Hanlin WangLos Angeles$20K
- Jianyu RaoLos Angeles$7K
- Jonathan SaidLos Angeles$6K
- Louis DubeauLos Angeles$3K
- Farres ObeidinLos Angeles$2K
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.