Guillermo Sangster, MD
Diagnostic Radiology · Shreveport, LANPI 1891711255
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $5,704 of the $8,247 with a category attached, or 69.2%. Guerbet LLC accounts for 90.2% of it on its own, with 14 other manufacturers making up the rest. Reporting peaked in 2019 at $4,338 and has fallen 96.6% since, to $148 in 2025. Among diagnostic radiology clinicians in LA 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 27 payments — averaging $305.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Guerbet LLC$7K
- Siemens Medical Solutions USA, Inc.$295
- GE HealthCare$142
- Imperative Care, Inc$72
- Tempus AI, Inc$46
- Genentech USA, Inc.$42
- plus $209 from 9 others
What the payments were for
- Consulting fees$5,70469%
- Travel & lodging$1,31016%
- Food & beverage$1,23215%
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 |
|---|---|---|
| Guerbet LLC | 9 | $7,440 |
| Siemens Medical Solutions USA, Inc. | 2 | $295 |
| GE HealthCare | 2 | $142 |
| Imperative Care, Inc | 1 | $72 |
| Tempus AI, Inc | 2 | $46 |
| Genentech USA, Inc. | 2 | $42 |
| Heartflow, Inc. | 1 | $40 |
| Daiichi Sankyo Inc. | 1 | $29 |
| Sobi, Inc | 1 | $25 |
| Menarini Silicon Biosystems, Inc. | 1 | $22 |
| Puma Biotechnology, Inc. | 1 | $21 |
| Lilly USA, LLC | 1 | $20 |
| Sanofi | 1 | $18 |
| Stemline Therapeutics Inc. | 1 | $18 |
| Geron Corporation | 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.
- ELUCIREM$2,990
- MAGNETOM Sola$295
How this compares
$8,247 in reported general payments places this provider in the 95th percentile of 418 diagnostic radiology providers in Louisiana.
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 Shreveport
- Andrew MarsalaShreveport$4K
- Brian DupreeShreveport$2K
- Aaron BurginShreveport$2K
- Carlos PreviglianoShreveport$761
- Jay FakierShreveport$757
- James GrudenNew Orleans$171K
- James RuizBaton Rouge$105K
- Ankit PansaraNew Orleans$28K
- Eric RubinNew Orleans$24K
- Richard TramelNew Orleans$23K
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.