Has Irl Greenwell, MD received payments from drug or device companies?

Yes. Drug and device makers reported $376,097 in general payments to Irl Greenwell, MD across 210 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 Irl Greenwell, 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 Irl Greenwell, 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.

Irl Greenwell, MD

Hematology & Oncology · Charleston, SCNPI 1043573009

Payments from drug & device makers

$376,097in general payments, 2019–2025

Across 210 payments — averaging $1790.94 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Seagen Inc.$204K
Otsuka Pharmaceutical Co., Ltd.$78K
Pfizer$53K
Kyowa Kirin, Inc.$18K
Beigene, Ltd.$8K
Gilead$6K
plus $9K from 49 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
Seagen Inc.	22	$203,773
Otsuka Pharmaceutical Co., Ltd.	12	$77,986
Pfizer	15	$53,370
Kyowa Kirin, Inc.	5	$17,633
Beigene, Ltd.	1	$8,000
Gilead(2 entities)	11	$6,126
Stemline Therapeutics Inc.	4	$2,870
Janssen Scientific Affairs, LLC	1	$1,635
Aurobindo Pharma USA, Inc.	1	$1,350
E.r. Squibb & Sons, L.L.C.	16	$320
Novartis	13	$298
Merck	11	$287
Secura Bio, Inc.	3	$245
AstraZeneca(2 entities)	9	$174
Bristol Myers Squibb	7	$149
Novocure Inc.	3	$107
GSK	5	$107
Regeneron Healthcare Solutions, Inc.	4	$96
Immunocore Limited	4	$94
Beone Medicines USA, Inc.	3	$90
Sobi, Inc	4	$90
AbbVie	4	$78
Incyte Corporation	3	$76
ADC Therapeutics America, Inc.	4	$75
Johnson & Johnson	3	$74
Acrotech Biopharma Inc.	2	$59
Jazz Pharmaceuticals Inc.	3	$55
Beigene USA, Inc.	2	$55
Daiichi Sankyo Inc.	2	$53
Rigel Pharmaceuticals, Inc.	2	$49
Ipsen Biopharmaceuticals, Inc	2	$48
Adaptive Biotechnologies Corporation	2	$45
Pharmaessentia USA Corporation	2	$43
Pharmacosmos Therapeutics Inc.	2	$43
Tersera Therapeutics LLC	2	$42
Genentech USA, Inc.	2	$41
Sanofi	1	$36
Eisai Inc.	1	$35
Recordati_rare_diseases_inc.	1	$34
Lilly USA, LLC	1	$30
Alnylam Pharmaceuticals Inc.	1	$28
Bayer	1	$27
EMD Serono, Inc.	1	$26
Blueprint Medicines Corporation	1	$26
Genmab U.S., Inc.	1	$26
Boehringer Ingelheim	1	$25
Apellis Pharmaceuticals, Inc.	1	$24
Takeda Pharmaceuticals U.S.A., Inc.	1	$22
Syndax Pharmaceuticals, Inc.	1	$22
Azurity Pharmaceuticals, Inc.	1	$20
Array Biopharma Inc	1	$20
Servier Pharmaceuticals LLC	1	$19
Caris MPI, Inc.	1	$15
Bausch Health US, LLC	1	$14
Sumitomo Pharma America, Inc.	1	$14

How this compares

$376,097 in reported general payments places this provider in the 85th percentile of 166 hematology & oncology providers in South Carolina.

See all hematology & oncology providers in South Carolina →

Medicare billing

Part B allowed, 2024

$75,590

Medicare patients

248

Services billed

797

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 hematology & oncology in Charleston

Robert StuartCharleston$2.9M
Brian LingerfeltCharleston$1.1M
James OrcuttCharleston$1.1M
George GeilsCharleston$930K
John WrangleCharleston$919K
David EllisonCharleston$767K
George KeoghCharleston$745K
Russell JenkinsCharleston$627K
Ming LimCharleston$341K
Young LeeCharleston$338K

See the full list for South Carolina →

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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