Has John Larsen received payments from drug or device companies?

Yes. Drug and device makers reported $2,827 in general payments to John Larsen across 113 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 Larsen 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 Larsen 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 Larsen

Pediatric Infectious Diseases · New York City, NYNPI 1700974169

Payments from drug & device makers

What this record shows

Almost everything reported here is food and beverage — 100.0% of the total across 113 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 33 manufacturers reported payments, led by GSK at 29.2% of the total. Reporting peaked in 2019 at $748 and has fallen 65.9% since, to $255 in 2025.

$2,827in general payments, 2019–2025

Across 113 payments — averaging $25.02 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

GSK$826
Kaleo, Inc.$426
Tepha Inc$399
Genentech USA, Inc.$94
Novo Nordisk$79
Sanofi Pasteur Inc.$76
plus $927 from 27 others

What the payments were for

Food & beverage$2,827100%

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
GSK	35	$826
Kaleo, Inc.	20	$426
Tepha Inc	3	$399
Genentech USA, Inc.	5	$94
Novo Nordisk	4	$79
Sanofi Pasteur Inc.	2	$76
Merck	4	$72
Azurity Pharmaceuticals, Inc.	3	$65
Hologic Sales And Service, LLC	2	$60
Ascendis Pharma Endocrinology Inc	2	$55
Seqirus USA Inc	3	$52
Amneal Pharmaceuticals LLC	2	$50
AstraZeneca	2	$49
Pfizer	2	$47
Ipsen Biopharmaceuticals, Inc	2	$45
Sobi, Inc	2	$43
Tolmar Pharmaceuticals, Inc.	2	$38
Ultragenyx Pharmaceutical Inc.	2	$34
Sanofi	1	$31
Cranial Technologies, Inc	2	$30
Takeda Pharmaceuticals U.S.A., Inc.	1	$27
AbbVie	1	$26
Tolmar, Inc.	1	$23
Sanofi-aventis U.S. LLC	1	$23
Aimmune Therapeutics, Inc.	1	$21
Xeris Pharmaceuticals, Inc.	1	$21
Alk-abello, Inc	1	$20
Phadia US Inc.	1	$20
Verrica Pharmaceuticals Inc.	1	$18
Polynovo North America LLC	1	$16
Avion Pharmaceuticals	1	$16
Endo Pharmaceuticals Inc.	1	$12
Arbor Pharmaceuticals, Inc.	1	$12

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.

GalaFLEX$309

How this compares

$2,827 in reported general payments places this provider in the 75th percentile of 73 pediatric infectious diseases providers in New York.

See all pediatric infectious diseases providers in New York →

Other pediatric infectious diseases in New York City

Sallie PermarNew York City$18K
Joseph DomachowskeSyracuse$470K
Jana ShawWatertown$346K
Philip LarussaNew York$125K
Lisa SaimanNew York$73K
Leonard KrilovMineola$64K
Brenda TesiniRochester$45K
Margaret HammerschlagBrooklyn$33K
Betsy HeroldNew York$12K
John ZahradnikGoshen$10K

See the full list for New York →

Where these figures come from

Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
Identity: NPPES NPI Registry, July 2026.

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