Has John Lederer, MD received payments from drug or device companies?

Yes. Drug and device makers reported $2,549 in general payments to John Lederer, MD across 92 transactions between 2019–2025. Most Open Payments records nationally are meals worth under $20; a reported payment is not evidence of wrongdoing.

Does a payment mean John Lederer, MD did something wrong?

No. Federal law requires drug and device makers to report almost every transfer of value to a physician, including a $14 sandwich at a lunch presentation. Consulting fees, research funding and royalties to device inventors are ordinary, legal parts of medicine. This site reports what was disclosed; it makes no allegation.

Where does this information about John Lederer, MD come from?

The U.S. Centers for Medicare & Medicaid Services. Payments come from Open Payments, published under the Physician Payments Sunshine Act. Billing and prescribing figures come from the Medicare Physician & Other Practitioners and Part D Prescriber public use files for 2024.

John Lederer, MD

Radiation Oncology · Honolulu, HINPI 1740253327

Payments from drug & device makers

What this record shows

Almost everything reported here is food and beverage — 100.0% of the total across 92 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 23 manufacturers, the largest accounting for just 11.0% — the pattern of someone who eats at a lot of different presentations.

$2,549in general payments, 2019–2025

Across 92 payments — averaging $27.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Palette Life Sciences, Inc.$279
Elekta, Inc.$273
AstraZeneca$243
E.r. Squibb & Sons, L.L.C.$221
Pfizer$200
Siemens Medical Solutions USA, Inc.$200
plus $1K from 17 others

$144,876in research payments, 2019–2025

Across 13 payments — averaging $11,144 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.

Palette Life Sciences, Inc.$98K
Teleflex LLC$46K

What the payments were for

Food & beverage$2,549100%

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

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.

Company	Payments	Total
Palette Life Sciences, Inc.	4	$279
Elekta, Inc.	2	$273
AstraZeneca	12	$243
E.r. Squibb & Sons, L.L.C.	12	$221
Pfizer	10	$200
Siemens Medical Solutions USA, Inc.	4	$200
Bayer	8	$167
Merck	7	$159
Novartis	6	$155
Boston Scientific	7	$136
Janssen Scientific Affairs, LLC	1	$85
Johnson & Johnson	3	$71
Teleflex LLC	3	$68
Carbofix Spine Inc	1	$52
Varian Medical Systems, Inc.	2	$39
Fresenius Kabi USA, LLC	1	$32
Reflexion Medical, Inc.	1	$31
Sanofi	2	$29
Visionrt, Inc.	2	$27
Tolmar Pharmaceuticals, Inc.	1	$25
Servier Pharmaceuticals LLC	1	$23
Medtronic	1	$19
Novocure Inc.	1	$15

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

$2,549 in reported general payments places this provider in the 80th percentile of 27 radiation oncology providers in Hawaii.

See all radiation oncology providers in Hawaii →

Medicare billing

Part B allowed, 2024

$633,810

Medicare patients

288

Services billed

3,383

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

Drug	Claims	Cost to plans & patients
Ciprofloxacin Hcl	98	$436
Tamsulosin Hcl	21	$227
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim	48	$116
Cephalexin	21	$45
Lorazepam	21	$11

Paid to pharmacies, not to this prescriber.

Other radiation oncology in Honolulu

Laeton PangHonolulu$10K
Michael RoachHonolulu$9K
Jared HaraHonolulu$3K
Anthony MichaudHonolulu$3K
Mark MayedaHonolulu$2K
Christina SpeirsHonolulu$2K
Samuel BirerHonolulu$2K
Richard LeeHonolulu$2K
Scott MoonHonolulu$2K
Susie ChenHonolulu$1K

See the full list for Hawaii →

Where these figures come from

Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
Identity: NPPES NPI Registry, July 2026.

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