RxDoctor Payments Data

Avedik Semerjian, MD

Nephrology · Lakewood, CANPI 1831120591

Payments from drug & device makers

$15,826in general payments, 2019–2025

Across 47 payments — averaging $336.72 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • GSK$8K
  • AstraZeneca$6K
  • Bayer$337
  • Baxter Healthcare$248
  • Otsuka America Pharmaceutical, Inc.$246
  • Ardelyx, Inc.$235
  • plus $618 from 9 others

What the payments were for

  • Food & beverage$1,78393%
  • Education$1297%

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

19
21
22
23
24
25

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.

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.

How this compares

$15,826 in reported general payments places this provider in the 80th percentile of 1,341 nephrology providers in California.

See all nephrology providers in California

Medicare billing

Part B allowed, 2024
$290,580
Medicare patients
389
Services billed
1,684

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

DrugClaimsCost to plans & patients
XphozahTenapanor Hcl75$238,029
JardianceEmpagliflozin111$96,797
KerendiaFinerenone83$63,743
VelphoroSucroferric Oxyhydroxide22$62,723
FarxigaDapagliflozin Propanediol60$61,444
ProcritEpoetin Alfa50$55,989
Sevelamer Carbonate207$50,945
Sevelamer Hcl33$39,471
LokelmaSodium Zirconium Cyclosilicate41$29,347
VeltassaPatiromer Calcium Sorbitex17$18,768
EliquisApixaban19$15,694
DapagliflozinDapagliflozin Propanediol17$11,490
HorizantGabapentin Enacarbil12$5,801
Cinacalcet Hcl32$5,198
Calcitriol160$3,061

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.

CompanyPaid to this providerPart D cost of their drugs
Boehringer IngelheimJardiance$50$96,797111 claims
AstraZenecaFarxiga, Lokelma$6,124$90,791101 claims
BayerKerendia$337$63,74383 claims
Fresenius USA Marketing, Inc.Velphoro$121$62,72322 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 80th percentile of 1,341 nephrology providers in California.

Other nephrology in Lakewood

See the full list for California

Where these figures come from

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