Has Chowdhury Ahsan, MD received payments from drug or device companies?

Yes. Drug and device makers reported $1,395,791 in general payments to Chowdhury Ahsan, MD across 677 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 Chowdhury Ahsan, 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 Chowdhury Ahsan, 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.

Chowdhury Ahsan, MD

Cardiovascular Disease · Las Vegas, NVNPI 1164502225

Payments from drug & device makers

$1,395,791in general payments, 2019–2025

Across 677 payments — averaging $2061.73 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Cvrx, Inc.$637K
Abbott$180K
Livanova USA, Inc.$166K
CSL Behring$155K
Novartis$116K
ZOLL Services LLC (a/k/a ZOLL Lifecor Corp)$44K
plus $98K from 36 others

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
Cvrx, Inc.	74	$637,271
Abbott	95	$180,027
Livanova USA, Inc.	27	$166,017
CSL Behring	91	$155,325
Novartis	19	$115,740
ZOLL Services LLC (a/k/a ZOLL Lifecor Corp)	35	$43,886
Janssen Research & Development, LLC	10	$34,677
American Regent	4	$29,692
Medtronic(2 entities)	34	$20,265
E.r. Squibb & Sons, L.L.C.	13	$2,622
Abiomed	82	$1,721
Edwards Lifesciences	10	$1,613
Shockwave Medical, Inc	16	$1,210
Biosense Webster, Inc.	14	$826
Boston Scientific	12	$667
Cardiva Medical, Inc.	27	$537
Kestra Medical Technology Services, Inc.	15	$512
Merck	18	$395
Heartflow, Inc.	3	$358
AstraZeneca	6	$242
Lantheus Medical Imaging, Inc.	12	$235
Amgen	6	$218
Esperion Therapeutics, Inc.	2	$165
Actelion Pharmaceuticals US, Inc.	3	$152
Bayer	2	$135
Cleerly, Inc.	1	$129
Astellas Pharma US Inc	2	$119
Mylan Specialty L.p.	4	$118
Pfizer	6	$114
Lexicon Pharmaceuticals, Inc.	5	$110
Chiesi USA, Inc.	2	$105
Novo Nordisk	5	$101
Boehringer Ingelheim	4	$95
Johnson & Johnson	7	$90
Impulse Dynamics (USA) Inc.	1	$76
Bridgebio Pharma, Inc.	2	$53
Cardiovascular Systems Inc.	3	$49
Asahi Intecc USA, Inc.	1	$47
Alnylam Pharmaceuticals Inc.	1	$24
Teleflex LLC	1	$20
Regeneron Healthcare Solutions, Inc.	1	$19
Sanofi-aventis U.S. LLC	1	$15

How this compares

$1,395,791 in reported general payments places this provider in the 95th percentile of 165 cardiovascular disease providers in Nevada.

See all cardiovascular disease providers in Nevada →

Medicare billing

Part B allowed, 2024

$2,187,309

Medicare patients

3,265

Services billed

20,428

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.

Other cardiovascular disease in Las Vegas

Ramprasad DandillayaLas Vegas$1.8M
Arjun GururajLas Vegas$399K
Navid KazemiLas Vegas$156K
Branavan UmakanthanLas Vegas$109K
Sanjay MalhotraLas Vegas$101K
Jawad KianiLas Vegas$73K
Amish PrasadLas Vegas$58K
Rafael ValenciaLas Vegas$52K
Salvador BorromeoLas Vegas$45K
William ReshLas Vegas$39K

See the full list for Nevada →

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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