Walter Zink
Diagnostic Radiology · San Antonio, TXNPI 1750512281
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $1,455 of the $2,266 with a category attached, or 64.2%. 6 manufacturers reported payments, led by Siemens Medical Solutions USA, Inc. at 44.0% of the total. Reporting peaked in 2022 at $1,133 and has fallen 95.3% since, to $53 in 2025. Among diagnostic radiology clinicians in TX 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 31 payments — averaging $73.11 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Siemens Medical Solutions USA, Inc.$998
- GE HealthCare$633
- Imperative Care, Inc$260
- Stryker$178
- Penumbra, Inc.$106
- Johnson & Johnson$91
What the payments were for
- Travel & lodging$1,45564%
- Food & beverage$81136%
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 |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | 4 | $998 |
| GE HealthCare | 1 | $633 |
| Imperative Care, Inc | 13 | $260 |
| Stryker | 8 | $178 |
| Penumbra, Inc. | 1 | $106 |
| Johnson & Johnson | 4 | $91 |
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.
- Artis icono floor$623
- ARTIS icono biplane$364
- RED 72$106
How this compares
$2,266 in reported general payments places this provider in the 90th percentile of 2,506 diagnostic radiology providers in Texas.
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 Antonio
- Anthony StavrosSan Antonio$465K
- Michael MiddlebrookSan Antonio$44K
- Carlos RestrepoSan Antonio$38K
- Juan GutierrezSan Antonio$37K
- Michael LaneSan Antonio$17K
- Todd TibbettsSan Antonio$15K
- Rajeev SuriSan Antonio$15K
- Harlan HarveyHouston$583K
- Steven RoweDallas$407K
- Alexandru BageacFort Worth$339K
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.