RxDoctor Payments Data

Prasanna Isaac, MD

Nephrology · Fort Wayne, INNPI 1881899276

Payments from drug & device makers

$3,416in general payments, 2019–2025

Across 189 payments — averaging $18.08 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • AstraZeneca$1K
  • Vifor Pharma, Inc.$386
  • Fresenius USA Marketing, Inc.$362
  • Bayer$287
  • Akebia Therapeutics Inc$232
  • OPKO Pharmaceuticals, LLC$191
  • plus $930 from 15 others

What the payments were for

  • Food & beverage$3,17593%
  • Education$2417%

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
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.

How this compares

$3,416 in reported general payments places this provider in the 70th percentile of 238 nephrology providers in Indiana.

See all nephrology providers in Indiana

Medicare billing

Part B allowed, 2024
$230,349
Medicare patients
413
Services billed
1,820

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
VeltassaPatiromer Calcium Sorbitex103$96,773
XphozahTenapanor Hcl17$73,807
Lanthanum Carbonate42$46,272
VelphoroSucroferric Oxyhydroxide13$40,930
RayaldeeCalcifediol21$40,504
LokelmaSodium Zirconium Cyclosilicate55$35,971
Sevelamer Carbonate95$18,355
FarxigaDapagliflozin Propanediol20$15,866
Cinacalcet Hcl64$5,856
Calcitriol295$3,446
Midodrine Hcl48$1,792
Hydralazine Hcl102$1,189
Calcium Acetate19$1,123
Amlodipine Besylate127$963
Potassium Chloride36$812

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
AstraZenecaLokelma, Farxiga$1,027$51,83875 claims
Fresenius USA Marketing, Inc.Velphoro$362$40,93013 claims
OPKO Pharmaceuticals, LLCRayaldee$191$40,50421 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 238 nephrology providers in Indiana.

Other nephrology in Fort Wayne

See the full list for Indiana

Where these figures come from

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