Question 1

Has Natraj Ammakkanavar, MD received payments from drug or device companies?

Accepted Answer

Yes. Drug and device makers reported $4,140,695 in general payments to Natraj Ammakkanavar, MD across 793 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 Natraj Ammakkanavar, MD 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 Natraj Ammakkanavar, MD 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
Eli Lilly	13	$1,661,670
AbbVie	411	$1,101,486
Pfizer	33	$433,119
Merck	27	$382,871
Seagen Inc.	48	$328,459
E.r. Squibb & Sons, L.L.C.	71	$105,229
Servier Bioinnovation	34	$74,929
AstraZeneca(2 entities)	27	$22,835
Astellas Pharma Global Development	4	$21,206
Gilead(2 entities)	6	$4,042
Regeneron Healthcare Solutions, Inc.	2	$1,861
Sanofi	11	$392
Amgen	13	$351
Genentech USA, Inc.	19	$307
Novartis	18	$290
Adaptive Biotechnologies Corporation	2	$228
Johnson & Johnson(2 entities)	12	$209
Daiichi Sankyo Inc.	3	$161
Incyte Corporation	4	$149
Pharmacyclics LLC, An Abbvie Company	4	$125
Genmab U.S., Inc.	1	$101
Beigene USA, Inc.	1	$97
ADC Therapeutics America, Inc.	1	$92
Eisai Inc.	5	$69
Tempus AI, Inc	1	$61
Bristol Myers Squibb	2	$44
Puma Biotechnology, Inc.	2	$35
Boehringer Ingelheim	2	$33
Kyowa Kirin, Inc.	2	$31
Ipsen Biopharmaceuticals, Inc	1	$29
Lilly USA, LLC	2	$29
Takeda Pharmaceuticals U.S.A., Inc.	2	$25
Sandoz	2	$23
Aurobindo Pharma USA, Inc.	1	$21
Verastem, Inc.	1	$17
Agios Pharmaceuticals, Inc.	1	$16
Foundation Medicine, Inc.	1	$14
Bayer	1	$13
Teva Pharmaceuticals USA, Inc.	1	$12
Astellas Pharma US Inc	1	$11

Natraj Ammakkanavar, MD

Payments from drug & device makers

Who reported the general payments

How this compares

Medicare billing

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