Farzad Assar, MD
Nephrology · Germantown, MDNPI 1447261615
Payments from drug & device makers
Across 82 payments — averaging $20.93 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Vifor Pharma, Inc.$332
- AstraZeneca$299
- Mallinckrodt Enterprises LLC$213
- Otsuka America Pharmaceutical, Inc.$169
- Travere Therapeutics, Inc.$122
- Ardelyx, Inc.$89
- plus $492 from 8 others
What the payments were for
- Food & beverage$1,48787%
- Education$22913%
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 |
|---|---|---|
| Vifor Pharma, Inc. | 16 | $332 |
| AstraZeneca(2 entities) | 15 | $299 |
| Mallinckrodt Enterprises LLC | 8 | $213 |
| Otsuka America Pharmaceutical, Inc. | 11 | $169 |
| Travere Therapeutics, Inc. | 4 | $122 |
| Ardelyx, Inc. | 4 | $89 |
| Amgen | 3 | $77 |
| Boehringer Ingelheim | 3 | $71 |
| Bayer | 3 | $70 |
| Mallinckrodt Hospital Products Inc. | 4 | $63 |
| Calliditas Therapeutics US Inc. | 3 | $60 |
| Akebia Therapeutics Inc | 3 | $60 |
| Fresenius USA Marketing, Inc. | 3 | $50 |
| Novartis | 2 | $42 |
How this compares
$1,716 in reported general payments places this provider in the 65th percentile of 285 nephrology providers in Maryland.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| FarxigaDapagliflozin Propanediol | 128 | $157,011 |
| KerendiaFinerenone | 32 | $44,374 |
| ProcritEpoetin Alfa | 18 | $41,338 |
| JardianceEmpagliflozin | 37 | $33,304 |
| JanumetSitagliptin Phos/Metformin Hcl | 16 | $13,566 |
| LinzessLinaclotide | 15 | $7,423 |
| Sevelamer Carbonate | 30 | $7,028 |
| ProsolParenteral Amino Acid 20% No.1 | 48 | $6,189 |
| Calcium Acetate | 19 | $5,708 |
| Amlodipine-ValsartanAmlodipine Besylate/Valsartan | 13 | $2,208 |
| Zolpidem Tartrate ErZolpidem Tartrate | 16 | $2,138 |
| Tamsulosin Hcl | 66 | $1,281 |
| Nifedipine ErNifedipine | 27 | $1,090 |
| Rosuvastatin Calcium | 55 | $1,059 |
| Metoprolol Succinate | 57 | $819 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AstraZenecaFarxiga | $299 | $157,011128 claims |
| BayerKerendia | $70 | $44,37432 claims |
| Boehringer IngelheimJardiance | $71 | $33,30437 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 65th percentile of 285 nephrology providers in Maryland.
Other nephrology in Germantown
- Christopher SperatiBaltimore$1.5M
- Michelle EstrellaBaltimore$1.2M
- Mohamed AttaBaltimore$1.1M
- Chirag ParikhBaltimore$1M
- Mario BelledonnePotomac$715K
- Matthew WeirBaltimore$518K
- Kiran SamindlaFrederick$491K
- Saeed KronfliTakoma Park$463K
- Duvuru GeethaBaltimore$409K
- Preeti ChandraBaltimore$287K
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.