Ram Patak, MD
Nephrology · Northridge, CANPI 1144218488
Payments from drug & device makers
Across 1,066 payments — averaging $1892.05 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Akebia Therapeutics Inc$574K
- Eli Lilly$532K
- Kowa Research Institute, Inc.$337K
- Novartis$188K
- Esperion Therapeutics, Inc.$152K
- Ardelyx, Inc.$102K
- plus $133K from 25 others
Across 1 payment — averaging $1427.00 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.
- Eli Lilly$1K
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 |
|---|---|---|
| Akebia Therapeutics Inc | 518 | $574,049 |
| Eli Lilly | 7 | $531,631 |
| Kowa Research Institute, Inc. | 38 | $336,553 |
| Novartis | 10 | $187,831 |
| Esperion Therapeutics, Inc. | 247 | $152,053 |
| Ardelyx, Inc. | 13 | $101,656 |
| Travere Therapeutics, Inc. | 65 | $82,129 |
| AstraZeneca | 31 | $26,100 |
| Alnylam Pharmaceuticals Inc. | 8 | $18,184 |
| AbbVie(2 entities) | 10 | $1,234 |
| Otsuka America Pharmaceutical, Inc. | 33 | $987 |
| Johnson & Johnson | 7 | $856 |
| Amgen(2 entities) | 24 | $744 |
| GSK | 10 | $424 |
| Boehringer Ingelheim | 3 | $359 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 3 | $325 |
| Amarin Pharma, Inc. | 2 | $249 |
| Lilly USA, LLC | 7 | $201 |
| Bayer | 4 | $188 |
| Vifor Pharma, Inc. | 8 | $179 |
| Aurinia Pharma U.S., Inc. | 3 | $177 |
| E.r. Squibb & Sons, L.L.C. | 1 | $125 |
| Pfizer | 1 | $125 |
| Sanofi-aventis U.S. LLC | 1 | $125 |
| Mallinckrodt Enterprises LLC | 1 | $124 |
| Merck | 1 | $118 |
| Fresenius USA Marketing, Inc. | 4 | $70 |
| Calliditas Therapeutics US Inc. | 2 | $45 |
| Sanofi | 2 | $34 |
| Mallinckrodt Hospital Products Inc. | 1 | $28 |
| Ultragenyx Pharmaceutical Inc. | 1 | $25 |
How this compares
$2,016,927 in reported general payments places this provider in the 95th percentile of 1,341 nephrology providers in California.
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 nephrology in Northridge
- Sohan DuaNorthridge$3.2M
- Dayan GandhiNorthridge$1M
- Anjay RastogiLos Angeles$6.3M
- Aamir JamalSan Dimas$5.5M
- Mohamed El-ShahawyLos Angeles$4.4M
- Kalpesh PatelCalabasas$3.6M
- Jehad HaggiagiMission Hills$3.6M
- Malvin YanSouth Gate$3.3M
- Richard LafayetteStanford$3M
- Anant DesaiGranada Hills$2.9M
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.