Ari Vanderwalde
Medical Oncology · Germantown, TNNPI 1083801450
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $9,030 of the $11,479 with a category attached, or 78.7%. E.r. Squibb & Sons, L.L.C. accounts for 86.5% of it on its own, with 6 other manufacturers making up the rest. Reporting peaked in 2020 at $5,375 and has fallen 97.8% since, to $117 in 2025.
Across 22 payments — averaging $521.76 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- E.r. Squibb & Sons, L.L.C.$10K
- Genentech, Inc.$1K
- Ipsen Biopharmaceuticals, Inc$180
- Illumina, Inc.$99
- Merck$81
- AstraZeneca$18
- plus $18 from 1 others
Across 442 payments — averaging $11,088 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.
- Merck$1.8M
- Genentech, Inc.$1M
- Novartis$821K
- E.r. Squibb & Sons, L.L.C.$701K
- Amgen$454K
- Gilead$35K
- plus $68K from 5 others
What the payments were for
- Consulting fees$9,03079%
- Speaking & faculty fees$5004%
- Travel & lodging$1,29211%
- Food & beverage$6566%
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 |
|---|---|---|
| E.r. Squibb & Sons, L.L.C. | 14 | $9,927 |
| Genentech, Inc. | 1 | $1,155 |
| Ipsen Biopharmaceuticals, Inc | 1 | $180 |
| Illumina, Inc. | 2 | $99 |
| Merck | 2 | $81 |
| AstraZeneca | 1 | $18 |
| Johnson & Johnson | 1 | $18 |
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.
- OPDIVO$6,042
- SOMATULINE DEPOT$180
- ONIVYDE$180
How this compares
$11,479 in reported general payments places this provider in the 55th percentile of 101 medical oncology providers in Tennessee.
Other medical oncology in Germantown
- Gregory VidalGermantown$360K
- Jason ChandlerGermantown$234K
- Daniel VaenaGermantown$104K
- Kurt TauerGermantown$44K
- Sylvia RicheyGermantown$27K
- Albert WeeksGermantown$13K
- William PaoNashville$838K
- Dana ThompsonNashville$339K
- Robert RamirezNashville$321K
- Mace RothenbergNashville$318K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.