David Parrella, MD
Vascular Neurology · Nashville, TNNPI 1225233141
Payments from drug & device makers
What this record shows
10 manufacturers reported payments, led by Penumbra, Inc. at 49.6% of the total. Reporting peaked in 2023 at $3,100 and has fallen 92.1% since, to $244 in 2025.
Across 41 payments — averaging $134.06 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Penumbra, Inc.$3K
- Medtronic$818
- Imperative Care, Inc$492
- Stryker$358
- Phenox Inc.$355
- Johnson & Johnson$287
- plus $461 from 4 others
Across 7 payments — averaging $1177.71 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.
- Penumbra, Inc.$8K
What the payments were for
- Speaking & faculty fees$2,40044%
- Food & beverage$3,09656%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Penumbra, Inc. | 3 | $2,725 |
| Medtronic(2 entities) | 15 | $818 |
| Imperative Care, Inc | 7 | $492 |
| Stryker | 5 | $358 |
| Phenox Inc. | 2 | $355 |
| Johnson & Johnson | 5 | $287 |
| Balt USA, LLC | 1 | $173 |
| Microvention, Inc. | 1 | $143 |
| Amgen | 1 | $123 |
| Qapel Medical Inc | 1 | $21 |
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.
- ZOOM 88-T LARGE DISTAL PLATFORM$385
- Avenir Coil$303
- Pipeline$251
- ZOOM REPERFUSION CATHETER$250
- Penumbra System$224
- WEB$143
- LVIS$143
- Headway Duo Microcatheter$143
- NA$143
- TFN-Advance$143
- UNIVERSAL NEURO 3$127
- SOLITAIRE X$127
- AIMOVIG$123
- Solitaire$106
- TREVO$105
- RED 72$101
How this compares
Too few vascular neurology providers in Tennesseeto place this figure against a meaningful peer group, so we don't.
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 vascular neurology in Nashville
- Deborah KerriganNashville$7K
- Himanshu PatelNashville$6K
- David CurfmanNashville$3K
- Phaniraj IyengarNashville$618
- Zunir ChaudhryNashville$164
- Matthew SchragNashville$116
- Carolyn CroninNashville$23
- Violiza AcostaMemphis$105K
- Charles CapeGermantown$2K
- Kaushik ParshaMemphis$786
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.