RxDoctor Payments Data

Peter Sohn, MD

Nephrology · Garden Grove, CANPI 1225579675

Payments from drug & device makers

$5,221in general payments, 2019–2025

Across 178 payments — averaging $29.33 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • AstraZeneca$2K
  • Amgen$493
  • Vifor Pharma, Inc.$484
  • Aurinia Pharma U.S., Inc.$406
  • Otsuka America Pharmaceutical, Inc.$337
  • Bayer$324
  • plus $2K from 14 others

What the payments were for

  • Food & beverage$5,221100%

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

20
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

$5,221 in reported general payments places this provider in the 70th percentile of 1,341 nephrology providers in California.

See all nephrology providers in California

Medicare billing

Part B allowed, 2024
$238,223
Medicare patients
502
Services billed
2,306

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
FarxigaDapagliflozin Propanediol78$65,837
VelphoroSucroferric Oxyhydroxide16$49,616
MounjaroTirzepatide39$40,953
DapagliflozinDapagliflozin Propanediol52$29,485
LokelmaSodium Zirconium Cyclosilicate30$24,876
VeltassaPatiromer Calcium Sorbitex18$15,924
ProcritEpoetin Alfa15$15,749
KerendiaFinerenone15$10,239
Sevelamer Carbonate16$3,325
Bumetanide44$1,326
Nifedipine ErNifedipine40$1,172
Midodrine Hcl27$970
Furosemide130$765
Gabapentin80$713
Hydralazine Hcl48$504

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
AstraZenecaFarxiga, Lokelma$1,541$90,713108 claims
Fresenius USA Marketing, Inc.Velphoro$34$49,61616 claims
Lilly USA, LLCMounjaro$24$40,95339 claims
BayerKerendia$324$10,23915 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 70th percentile of 1,341 nephrology providers in California.

Other nephrology in Garden Grove

See the full list for California

Where these figures come from

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