Has Mohammed Kassem, MD received payments from drug or device companies?

Yes. Drug and device makers reported $1,267,293 in general payments to Mohammed Kassem, MD across 500 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 Mohammed Kassem, 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 Mohammed Kassem, 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.

Mohammed Kassem, MD

Internal Medicine · Chicago, ILNPI 1023053808

Payments from drug & device makers

$1,267,293in general payments, 2019–2025

Across 500 payments — averaging $2534.59 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Merck$1.2M
Taiho Oncology, Inc.$9K
Organon$3K
AstraZeneca$1K
Genentech USA, Inc.$1K
E.r. Squibb & Sons, L.L.C.$730
plus $6K from 42 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
Merck	83	$1,246,253
Taiho Oncology, Inc.	4	$9,130
Organon	2	$3,000
AstraZeneca(2 entities)	52	$1,230
Genentech USA, Inc.	51	$1,014
E.r. Squibb & Sons, L.L.C.	39	$730
Lilly USA, LLC	28	$561
Bristol Myers Squibb	25	$487
Amgen	20	$412
Novartis	14	$371
Seagen Inc.	16	$344
Incyte Corporation	13	$327
Johnson & Johnson	12	$311
Pfizer	15	$297
Sanofi	14	$281
Takeda Pharmaceuticals U.S.A., Inc.	12	$278
Servier Pharmaceuticals LLC	9	$191
Daiichi Sankyo Inc.	7	$179
Bayer	7	$162
Exelixis Inc.	9	$161
AbbVie(2 entities)	4	$155
Regeneron Healthcare Solutions, Inc.	2	$129
Array Biopharma Inc	5	$107
ADC Therapeutics America, Inc.	6	$105
GSK	5	$101
Tempus AI, Inc	4	$100
Gilead	4	$89
Mirati Therapeutics, Inc.	5	$88
Boehringer Ingelheim	4	$88
Pharmacyclics LLC, An Abbvie Company	4	$75
Puma Biotechnology, Inc.	4	$71
Jazz Pharmaceuticals Inc.	2	$68
Deciphera Pharmaceuticals Inc.	2	$46
Tesaro, Inc.	1	$42
Global Blood Therapeutics, Inc.	2	$33
Immunogen, Inc.	2	$30
Foundation Medicine, Inc.	1	$28
CTI Biopharma Corp.	1	$24
G1 Therapeutics, Inc.	1	$23
Pharmaessentia USA Corporation	1	$23
Adaptive Biotechnologies Corporation	1	$22
Otsuka America Pharmaceutical, Inc.	1	$22
Eisai Inc.	1	$21
Sobi, Inc	1	$20
Syndax Pharmaceuticals, Inc.	1	$18
Ipsen Biopharmaceuticals, Inc	1	$18
Epizyme, Inc.	1	$17
Coherus Oncology, Inc.	1	$15

How this compares

$1,267,293 in reported general payments places this provider in the 95th percentile of 5,182 internal medicine providers in Illinois.

See all internal medicine providers in Illinois →

Medicare billing

Part B allowed, 2024

$46,983

Medicare patients

153

Services billed

417

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 internal medicine in Chicago

Dennis LevinsonChicago$25.3M
Danny SugimotoChicago$4M
Peter O DonnellChicago$3.9M
Daniel CatenacciChicago$3.5M
Patricia WalshChicago$2.1M
Merle DiamondChicago$1.7M
David BakerChicago$1M
Azazuddin AhmedChicago$912K
Daniel BergerChicago$861K
Naser YamaniChicago$700K

See the full list for Illinois →

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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