Gregory Zaharchuk, MD
Diagnostic Neuroimaging · Stanford, CANPI 1376653675
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $7,683 of the $10,083 with a category attached, or 76.2%. Biogen accounts for 74.9% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2020 at $5,375 and has fallen 97.4% since, to $141 in 2024.
Across 12 payments — averaging $840.28 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Biogen$8K
- GE HealthCare$2K
- Fujifilm Healthcare Americas Corporation$172
- Hyperfine Operations, Inc.$102
- Siemens Medical Solutions USA, Inc.$39
Across 3 payments — averaging $41,770 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.
- Bayer$119K
- GE HealthCare$6K
What the payments were for
- Consulting fees$7,68376%
- Speaking & faculty fees$1,46715%
- Travel & lodging$991%
- Food & beverage$8348%
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 |
|---|---|---|
| Biogen | 2 | $7,550 |
| GE HealthCare | 7 | $2,221 |
| Fujifilm Healthcare Americas Corporation | 1 | $172 |
| Hyperfine Operations, Inc. | 1 | $102 |
| Siemens Medical Solutions USA, Inc. | 1 | $39 |
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.
- ADUHELM$3,775
- WH Products$172
- Swoop$102
How this compares
$10,083 in reported general payments places this provider in the 80th percentile of 26 diagnostic neuroimaging 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 diagnostic neuroimaging in Stanford
- Jeremy HeitStanford$224K
- Nancy PhamStanford$71K
- Seena DehkharghaniStanford$16K
- Michael ZeinehStanford$5K
- Michael IvStanford$4K
- Andrew ChiuStanford$576
- Dale JamisonStanford$254
- Nancy FischbeinStanford$246
- Kimberly SeifertStanford$117
- Bryan LanzmanStanford$105
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.