Stuart Chasan
Urology · Oak Ridge, TNNPI 1457351496
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 98.9% of the total across 57 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 21 manufacturers, the largest accounting for just 23.2% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2019 at $585 and has fallen 53.4% since, to $273 in 2022. That places this record below the midpoint for urology clinicians in TN, where the typical reported total is $3,324.
Across 57 payments — averaging $22.57 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Astellas Pharma US Inc$299
- Urovant Sciences Inc$175
- AbbVie$170
- Boston Scientific$97
- Medtronic$95
- Ferring Pharmaceuticals Inc.$66
- plus $384 from 15 others
What the payments were for
- Food & beverage$1,27299%
- Education$151%
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 |
|---|---|---|
| Astellas Pharma US Inc | 11 | $299 |
| Urovant Sciences Inc | 11 | $175 |
| AbbVie(2 entities) | 3 | $170 |
| Boston Scientific | 6 | $97 |
| Medtronic(2 entities) | 2 | $95 |
| Ferring Pharmaceuticals Inc. | 2 | $66 |
| Tolmar Pharmaceuticals, Inc. | 3 | $61 |
| 180 Medical, Inc. | 2 | $38 |
| Johnson & Johnson | 2 | $34 |
| Myovant Sciences Inc. | 2 | $33 |
| Dendreon Pharmaceuticals LLC | 1 | $33 |
| Pfizer | 2 | $30 |
| Myriad Genetic Laboratories, Inc. | 2 | $27 |
| Amgen | 1 | $23 |
| Sun Pharmaceutical Industries Inc. | 1 | $22 |
| Teleflex LLC | 1 | $17 |
| Bayer | 1 | $16 |
| Rochester Medical Corporation | 1 | $14 |
| Endo Pharmaceuticals Inc. | 1 | $13 |
| Neotract Inc. | 1 | $12 |
| Zyla Life Sciences, Inc. | 1 | $11 |
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.
- BOTOX$145
How this compares
$1,287 in reported general payments places this provider in the 35th percentile of 276 urology providers in Tennessee.
Other urology in Oak Ridge
- L KnollNashville$2.1M
- David GubinMemphis$1M
- Gautam JayramNashville$1M
- David MorrisHendersonville$871K
- Roger DmochowskiNashville$763K
- Paul EberGermantown$476K
- Ashley TapscottNashville$425K
- Raoul ConcepcionNashville$339K
- Melissa KaufmanNashville$312K
- Mark GreenbergerMemphis$249K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.