Sasidhar Yallampalli, MD
Diagnostic Radiology · Houston, TXNPI 1831333582
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $233,500 of the $263,011 with a category attached, or 88.8%. Sirtex Medical Inc accounts for 98.1% of it on its own, with 11 other manufacturers making up the rest. Reporting peaked in 2024 at $83,312 and has fallen 83.0% since, to $14,154 in 2025. Among diagnostic radiology clinicians in TX 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 391 payments — averaging $672.66 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sirtex Medical Inc$258K
- Trisalus Life Sciences, Inc.$2K
- Boston Scientific$1K
- Okami Medical, Inc.$412
- Inari Medical, Inc.$318
- Cardiva Medical, Inc.$222
- plus $437 from 6 others
What the payments were for
- Speaking & faculty fees$233,50089%
- Travel & lodging$20,3188%
- Food & beverage$9,1933%
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 |
|---|---|---|
| Sirtex Medical Inc | 301 | $257,980 |
| Trisalus Life Sciences, Inc. | 44 | $2,243 |
| Boston Scientific | 24 | $1,399 |
| Okami Medical, Inc. | 6 | $412 |
| Inari Medical, Inc. | 3 | $318 |
| Cardiva Medical, Inc. | 5 | $222 |
| GE HealthCare | 2 | $173 |
| Cook Medical LLC | 1 | $100 |
| Stryker | 1 | $77 |
| Medtronic(2 entities) | 2 | $43 |
| Bard Peripheral Vascular, Inc. | 1 | $24 |
| Teleflex LLC | 1 | $20 |
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
$263,011 in reported general payments places this provider in the 95th 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 Houston
- Harlan HarveyHouston$583K
- Debra ButlerHouston$262K
- Melissa PriceHouston$233K
- Vivek BansalHouston$173K
- Stephen RoseHouston$163K
- Sankaman PraisoodyHouston$147K
- John LeeHouston$121K
- Nakul GuptaHouston$80K
- Tanya MoseleyHouston$57K
- Rishi AgrawalHouston$50K
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.