Question 1

Has Leonard Zemel received payments from drug or device companies?

Accepted Answer

Yes. Drug and device makers reported $727,602 in general payments to Leonard Zemel across 2,436 transactions between 2019–2025. Most Open Payments records nationally are meals worth under $20; a reported payment is not evidence of wrongdoing.

Question 2

Does a payment mean Leonard Zemel did something wrong?

Accepted Answer

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.

Question 3

Where does this information about Leonard Zemel come from?

Accepted Answer

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.

Company	Payments	Total
Novo Nordisk AS	1,752	$409,053
AbbVie(2 entities)	63	$171,378
Gilead	24	$43,972
AstraZeneca(2 entities)	63	$43,232
Boehringer Ingelheim	18	$35,139
Boehringer Ingelheim Pharma GmbH & Co.kg	38	$5,448
Novo Nordisk	143	$4,192
Sanofi-aventis U.S. LLC	35	$3,948
Kowa Research Institute, Inc.	3	$2,858
Tandem Diabetes Care, Inc.	6	$1,700
Mannkind Corporation	79	$1,454
Mylan Specialty L.p.	1	$1,038
Lilly USA, LLC	35	$612
Abbott	12	$468
Amgen(2 entities)	16	$412
Antares Pharma, Inc.	23	$368
Amarin Pharma, Inc.	14	$326
Amneal Pharmaceuticals LLC	20	$280
IBSA Pharma Inc.	12	$227
Merck	15	$226
Medtronic(2 entities)	7	$146
Dexcom, Inc.	7	$128
Valeritas, Inc.	7	$125
Lifescan, Inc.	6	$118
Insulet Corporation	6	$100
Ultragenyx Pharmaceutical Inc.	5	$94
Bayer	4	$75
Johnson & Johnson	3	$73
Corcept Therapeutics	4	$64
Senseonics, Incorporated	2	$49
Recordati_rare_diseases_inc.	1	$41
Zealand Pharma US, Inc.	1	$35
Clarus Therapeutics Inc.	2	$33
Acella Pharmaceuticals, LLC	1	$31
Radius Health, Inc.	1	$26
Rhythm Pharmaceuticals, Inc.	1	$26
Takeda Pharmaceuticals U.S.A., Inc.	1	$21
Nestle Healthcare Nutrition Inc.	1	$19
BD	1	$17
Esperion Therapeutics, Inc.	1	$17
Xeris Pharmaceuticals, Inc.	1	$16
Eisai Inc.	1	$15

Leonard Zemel

Payments from drug & device makers

Who reported the general payments

How this compares

Other endocrinology, diabetes & metabolism in Denver