RxDoctor Payments Data

Chidambaram Valliappan, MD

Nephrology · Winter Park, FLNPI 1265815021

Payments from drug & device makers

$1,516in general payments, 2019–2025

Across 84 payments — averaging $18.04 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • Amgen$269
  • AstraZeneca$146
  • Travere Therapeutics, Inc.$135
  • Bayer$131
  • Otsuka America Pharmaceutical, Inc.$112
  • Mallinckrodt Hospital Products Inc.$110
  • plus $613 from 16 others

What the payments were for

  • Food & beverage$1,43294%
  • Education$846%

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

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.

How this compares

$1,516 in reported general payments places this provider in the 45th percentile of 756 nephrology providers in Florida.

See all nephrology providers in Florida

Medicare billing

Part B allowed, 2024
$193,793
Medicare patients
354
Services billed
1,664

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 Propanediol190$123,936
JardianceEmpagliflozin141$88,774
KerendiaFinerenone80$57,564
LokelmaSodium Zirconium Cyclosilicate24$18,087
EliquisApixaban16$11,481
EntrestoSacubitril/Valsartan11$6,764
ProcritEpoetin Alfa17$6,340
Sevelamer Carbonate19$5,268
Bumetanide56$2,256
Potassium Citrate ErPotassium Citrate25$1,497
Losartan Potassium90$803
Tamsulosin Hcl65$614
Doxazosin Mesylate32$606
Finasteride29$553
Torsemide33$541

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$146$142,023214 claims
Boehringer IngelheimJardiance$22$88,774141 claims
BayerKerendia$131$57,56480 claims
PfizerEliquis$67$11,48116 claims
Johnson & JohnsonProcrit$47$6,34017 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 45th percentile of 756 nephrology providers in Florida.

Other nephrology in Winter Park

See the full list for Florida

Where these figures come from

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