Rajat Kaul
Nephrology · Tulsa, OKNPI 1932275013
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 96.6% of the total across 158 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 22 manufacturers, the largest accounting for just 16.2% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2019 at $1,086 and has fallen 85.2% since, to $161 in 2022.
Across 158 payments — averaging $18.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$480
- Amgen$444
- Veloxis Pharmaceuticals, Inc.$355
- Otsuka America Pharmaceutical, Inc.$227
- Fresenius USA Marketing, Inc.$209
- Akebia Therapeutics Inc$196
- plus $1K from 16 others
What the payments were for
- Food & beverage$2,85797%
- Education$993%
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 |
|---|---|---|
| AstraZeneca(2 entities) | 28 | $480 |
| Amgen(2 entities) | 22 | $444 |
| Veloxis Pharmaceuticals, Inc. | 11 | $355 |
| Otsuka America Pharmaceutical, Inc. | 13 | $227 |
| Fresenius USA Marketing, Inc. | 22 | $209 |
| Akebia Therapeutics Inc | 11 | $196 |
| Mallinckrodt Hospital Products Inc. | 9 | $170 |
| Mallinckrodt Enterprises LLC | 5 | $161 |
| Vifor Pharma, Inc. | 8 | $160 |
| Daiichi Sankyo Inc. | 5 | $107 |
| OPKO Pharmaceuticals, LLC | 6 | $102 |
| Shire North American Group Inc | 3 | $60 |
| Melinta Therapeutics, LLC | 2 | $54 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $45 |
| AbbVie | 2 | $37 |
| Genentech USA, Inc. | 2 | $33 |
| GSK | 2 | $29 |
| Amicus Therapeutics, Inc. | 1 | $21 |
| Novo Nordisk | 1 | $21 |
| Aurinia Pharma U.S., Inc. | 1 | $17 |
| Medtronic | 1 | $16 |
| Arbor Pharmaceuticals, Inc. | 1 | $14 |
How this compares
$2,956 in reported general payments places this provider in the 60th percentile of 106 nephrology providers in Oklahoma.
Other nephrology in Tulsa
- Sunil AgrawalTulsa$40K
- Pranay KathuriaTulsa$21K
- Kevin FuTulsa$14K
- Diptesh GuptaTulsa$13K
- Janet RussellTulsa$12K
- Bobby MuthalalyTulsa$12K
- Narottam RegmiTulsa$12K
- Alpana PasrichaTulsa$9K
- Reza AzadiTulsa$9K
- Christine WilsonTulsa$8K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.