Has Gregory Seymour received payments from drug or device companies?

Yes. Drug and device makers reported $8,928 in general payments to Gregory Seymour across 502 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 Gregory Seymour 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 Gregory Seymour 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.

Gregory Seymour

Hematology & Oncology · Kingwood, TXNPI 1720041056

Payments from drug & device makers

$8,928in general payments, 2019–2025

Across 502 payments — averaging $17.79 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Johnson & Johnson$814
Pfizer$697
Novartis$659
Astellas Pharma US Inc$547
Merck$513
E.r. Squibb & Sons, L.L.C.$484
plus $5K from 54 others

What the payments were for

Food & beverage$8,51395%
Education$4155%

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
Johnson & Johnson(2 entities)	44	$814
Pfizer	45	$697
Novartis	40	$659
Astellas Pharma US Inc	17	$547
Merck	30	$513
E.r. Squibb & Sons, L.L.C.	36	$484
Seagen Inc.	23	$365
GSK	16	$345
Lilly USA, LLC	21	$341
Bristol Myers Squibb	14	$263
Gilead(2 entities)	14	$238
Sanofi	12	$231
Amgen	13	$221
Incyte Corporation	14	$206
AstraZeneca	12	$192
AbbVie	9	$190
Bayer	7	$159
Takeda Pharmaceuticals U.S.A., Inc.	5	$127
Sandoz	6	$106
Pharmacyclics LLC, An Abbvie Company	6	$106
Boston Scientific	3	$104
Teva Pharmaceuticals USA, Inc.	5	$96
Servier Pharmaceuticals LLC	5	$95
Ipsen Biopharmaceuticals, Inc	5	$93
AVEO Pharmaceuticals, Inc.	4	$93
Adaptive Biotechnologies Corporation	5	$85
Puma Biotechnology, Inc.	4	$75
Dova Pharmaceuticals	5	$72
Morphosys, US Inc.	4	$71
Eisai Inc.	4	$69
Karyopharm Therapeutics Inc.	4	$67
Pharmacosmos Therapeutics Inc.	4	$67
Tesaro, Inc.	3	$63
Daiichi Sankyo Inc.	3	$62
Jazz Pharmaceuticals Inc.	3	$60
Array Biopharma Inc	3	$59
Genentech USA, Inc.	4	$59
Boehringer Ingelheim	4	$57
Exelixis Inc.	4	$54
EMD Serono, Inc.	4	$52
Taiho Oncology, Inc.	3	$49
Mylan Institutional Inc.	3	$49
Myovant Sciences Inc.	2	$43
Dendreon Pharmaceuticals LLC	2	$36
Regeneron Healthcare Solutions, Inc.	2	$34
Blue Earth Diagnostics	2	$33
CTI Biopharma Corp.	1	$25
Sobi, Inc	1	$24
Tersera Therapeutics LLC	1	$24
Acceleron Pharma, Inc.	1	$23
Rigel Pharmaceuticals, Inc.	1	$23
Acrotech Biopharma Inc.	1	$21
Immunomedics, Inc.	1	$20
Kyowa Kirin, Inc.	1	$20
Pharming Healthcare, Inc.	1	$19
ADC Therapeutics America, Inc.	1	$19
Genmab U.S., Inc.	1	$18
Helsinn Therapeutics (U.S.), Inc.	1	$18
Myriad Genetic Laboratories, Inc.	1	$17
Aurobindo Pharma USA, Inc.	1	$17

How this compares

$8,928 in reported general payments places this provider in the 50th percentile of 838 hematology & oncology providers in Texas.

See all hematology & oncology providers in Texas →

Other hematology & oncology in Kingwood

Anirudha DasguptaKingwood$7.4M
Mary CrowKingwood$6.5M
Saleha SajidKingwood$6M
Elias JabbourHouston$264.1M
Luhua WangHouston$79.6M
Courtney DinardoHouston$74M
Jorge Cortes-FrancoHouston$59.4M
William WierdaHouston$58.7M
Koji SasakiHouston$39.2M
Kyriakos PapadopoulosSan Antonio$18.5M

See the full list for Texas →

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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