RxDoctor Payments Data

John Ayers, MD

Hematology & Oncology · Warrenville, ILNPI 1477540821

Payments from drug & device makers

What this record shows

This record is dominated by consulting fees: $1,650 of the $1,996 with a category attached, or 82.7%. AstraZeneca accounts for 90.6% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2024 at $1,742 and has fallen 96.1% since, to $68 in 2025. That places this record below the midpoint for hematology & oncology clinicians in IL, where the typical reported total is $2,365.

$1,996in general payments, 2019–2025

Across 8 payments — averaging $249.47 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • AstraZeneca$2K
  • GE HealthCare$135
  • Sysmex America, Inc.$22
  • E.r. Squibb & Sons, L.L.C.$16
  • Gilead$12
  • Pfizer$3
$44,386in research payments, 2019–2025

Across 14 payments — averaging $3170.40 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.

  • Pfizer$20K
  • Tolmar, Inc.$18K
  • Merck$7K

What the payments were for

  • Consulting fees$1,65083%
  • Food & beverage$24912%
  • Education$965%

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.

How this compares

$1,996 in reported general payments places this provider in the 45th percentile of 580 hematology & oncology providers in Illinois.

See all hematology & oncology providers in Illinois →

Medicare billing

Part B allowed, 2024
$176,641
Medicare patients
489
Services billed
1,321

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
VerzenioAbemaciclib20$304,257
PromactaEltrombopag Olamine12$87,707
EliquisApixaban76$83,627
XareltoRivaroxaban27$31,545
Tamoxifen Citrate255$6,494
Raloxifene Hcl124$6,078
Letrozole126$3,522
Exemestane22$2,543
Anastrozole121$2,115
Hydroxyurea20$452
Dexamethasone14$321
Prochlorperazine Maleate42$317
Gabapentin12$307
Ondansetron OdtOndansetron14$208
Prednisone12$65

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
PfizerEliquis$3$83,62776 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 580 hematology & oncology providers in Illinois.

Other hematology & oncology in Warrenville

See the full list for Illinois →

Where these figures come from

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