Stavropoula Tjoumakaris, MD
Neurological Surgery · Philadelphia, PANPI 1629286018
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (60.0%), speaking fees and travel and lodging — rather than concentrated in one kind of arrangement. Medtronic accounts for 60.0% of it on its own, with 7 other manufacturers making up the rest. 2025 is the largest year on record at $69,314, more than ten times the $882 reported in 2019. Among neurological surgery clinicians in PA 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 90 payments — averaging $1384.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$75K
- Microvention, Inc.$47K
- Medical Device Business Services, Inc.$1K
- Viz.ai, Inc.$611
- Johnson & Johnson$498
- Balt USA, LLC$257
- plus $188 from 2 others
Across 41 payments — averaging $11,290 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.
- Microvention, Inc.$245K
- Balt USA, LLC$124K
- Penumbra, Inc.$35K
- Medical Device Business Services, Inc.$23K
- Stryker$22K
- Medtronic$15K
What the payments were for
- Consulting fees$74,72560%
- Speaking & faculty fees$31,95026%
- Travel & lodging$15,09612%
- Food & beverage$2,8282%
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 |
|---|---|---|
| Medtronic(2 entities) | 28 | $74,774 |
| Microvention, Inc. | 44 | $47,197 |
| Medical Device Business Services, Inc. | 3 | $1,074 |
| Viz.ai, Inc. | 2 | $611 |
| Johnson & Johnson | 8 | $498 |
| Balt USA, LLC | 3 | $257 |
| Microtransponder, Inc. | 1 | $143 |
| Siemens Medical Solutions USA, Inc. | 1 | $44 |
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.
- Pipeline$74,194
- WEB Aneurysm Embolization System$23,004
- STENT$15,091
- WEB$3,294
- SOFIA EX 5F - 105CM STR$1,300
- EMBOGUARD$983
- Viz.AI LVO$611
- Optima Coil System$174
- TUBING KIT - STROKE$141
- SOFIA 6F-131CM STR$141
How this compares
$124,599 in reported general payments places this provider in the 90th percentile of 390 neurological surgery providers in Pennsylvania.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| BrilintaTicagrelor | 43 | $22,681 |
| ClopidogrelClopidogrel Bisulfate | 55 | $620 |
| Methylprednisolone | 14 | $61 |
| Famotidine | 13 | $24 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Philadelphia
- Amer SamdaniPhiladelphia$4.4M
- Brian JankowitzPhiladelphia$823K
- Joshua HellerPhiladelphia$519K
- Srinivas PrasadPhiladelphia$513K
- Chengyuan WuPhiladelphia$377K
- John ShinPhiladelphia$306K
- Omar ChoudhriPhiladelphia$304K
- Pascal JabbourPhiladelphia$198K
- Casey HalpernPhiladelphia$186K
- Steven FulopPhiladelphia$140K
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.