Matthew Bucknor, MD
Diagnostic Radiology · San Francisco, CANPI 1407181274
Payments from drug & device makers
What this record shows
This record is dominated by grants: $3,928 of the $4,451 with a category attached, or 88.3%. GE HealthCare accounts for 88.3% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2019 at $2,715 and has fallen 99.4% since, to $17 in 2025. Among diagnostic radiology 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 5 payments — averaging $890.26 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- GE HealthCare$4K
- Medtronic$506
- Cardinal Health 414 LLC$17
Across 7 payments — averaging $10,264 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.
- Insightec,ltd$62K
- Insightec,inc$10K
What the payments were for
- Consulting fees$50011%
- Grants$3,92888%
- Food & beverage$231%
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 |
|---|---|---|
| GE HealthCare | 2 | $3,928 |
| Medtronic | 2 | $506 |
| Cardinal Health 414 LLC | 1 | $17 |
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.
How this compares
$4,451 in reported general payments places this provider in the 90th percentile of 3,537 diagnostic radiology 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 radiology in San Francisco
- Yingbing WangSan Francisco$403K
- Derk PurcellSan Francisco$93K
- Jerome BarakosSan Francisco$93K
- Javier Villanueva-MeyerSan Francisco$87K
- Christopher HessSan Francisco$66K
- Kimberly KallianosSan Francisco$59K
- Murray ReicherSan Diego$10.5M
- Agnes SantosaSan Diego$884K
- Robert SuhLos Angeles$758K
- Jonathan ChungSan Diego$747K
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.