Ravi Thadhani
Nephrology · Boston, MANPI 1831170620
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $98,093 of the $114,642 with a category attached, or 85.6%. 4 manufacturers reported payments, led by Bayer at 48.2% of the total. Reporting peaked in 2019 at $48,630 and has fallen 70.0% since, to $14,583 in 2025. Among nephrology clinicians in MA 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 46 payments — averaging $2492.23 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Bayer$55K
- Alnylam Pharmaceuticals Inc.$44K
- Orthocell LTD$15K
- Fresenius USA Marketing, Inc.$1K
Across 15 payments — averaging $44,261 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.
- Brahms GmbH$500K
- Sanofi$164K
- Fisher Scientific Company L.L.C.$95
What the payments were for
- Consulting fees$98,09386%
- Speaking & faculty fees$1,2491%
- Travel & lodging$15,14613%
- Food & beverage$1540%
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 |
|---|---|---|
| Bayer | 31 | $55,310 |
| Alnylam Pharmaceuticals Inc. | 12 | $43,500 |
| Orthocell LTD | 1 | $14,583 |
| Fresenius USA Marketing, Inc. | 2 | $1,249 |
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.
- Non-Covered$53,671
How this compares
$114,642 in reported general payments places this provider in the 95th percentile of 339 nephrology providers in Massachusetts.
Other nephrology in Boston
- David FriedmanBoston$19.8M
- Martin PollakBoston$19.8M
- Dennis AusielloBoston$4.6M
- Ajay SinghBoston$916K
- Leslie FangBoston$388K
- Jean FrancisBoston$244K
- Joseph BonventreBoston$175K
- Andrew AllegrettiBoston$139K
- Meghan SiseBoston$113K
- Ronald PerroneBoston$110K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.