Has John Castor, MD received payments from drug or device companies?

Yes. Drug and device makers reported $2,191 in general payments to John Castor, MD across 49 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 John Castor, 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 John Castor, 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.

John Castor, MD

Gastroenterology · Columbus, OHNPI 1093987257

Payments from drug & device makers

$2,191in general payments, 2019–2025

Across 49 payments — averaging $44.72 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

AbbVie$1K
Pfizer$240
Boston Scientific$175
Medtronic$144
Sanofi$124
E.r. Squibb & Sons, L.L.C.$120
plus $356 from 7 others

What the payments were for

Food & beverage$2,17699%
Education$151%

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
AbbVie	23	$1,031
Pfizer	8	$240
Boston Scientific	5	$175
Medtronic	1	$144
Sanofi	2	$124
E.r. Squibb & Sons, L.L.C.	1	$120
QOL Medical, LLC	1	$109
Salix Pharmaceuticals, A Division Of Bausch Health US, LLC	1	$100
Bristol Myers Squibb	2	$70
Takeda Pharmaceuticals U.S.A., Inc.	2	$30
Ferring Pharmaceuticals Inc.	1	$17
Phathom Pharmaceuticals, Inc.	1	$15
Regeneron Healthcare Solutions, Inc.	1	$15

What the payments were tied to

Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.

How this compares

$2,191 in reported general payments places this provider in the 45th percentile of 657 gastroenterology providers in Ohio.

See all gastroenterology providers in Ohio →

Medicare billing

Part B allowed, 2024

$80,031

Medicare patients

422

Services billed

603

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.

Most prescribed under Part D

Drug	Claims	Cost to plans & patients
Mesalamine	18	$13,957
Peg 3350-ElectrolyteSodium Chloride/Nahco3/Kcl/Peg	320	$6,016
Budesonide DrBudesonide	14	$2,784
Omeprazole	260	$2,005
CholestyramineCholestyramine (With Sugar)	25	$1,244
Pantoprazole Sodium	72	$1,028
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates	12	$789
Ondansetron OdtOndansetron	34	$723
PrevaliteCholestyramine	11	$481
Esomeprazole Magnesium	24	$476
Lactulose	11	$422
Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl	36	$408
Dicyclomine Hcl	13	$148
Spironolactone	12	$97
Ondansetron Hcl	15	$23

Paid to pharmacies, not to this prescriber.

Other gastroenterology in Columbus

Na LiColumbus$1.4M
Thangam VenkatesanColumbus$751K
Somashekar KrishnaColumbus$465K
Peter StanichColumbus$463K
Tasos ManokasColumbus$411K
Subhankar ChakrabortyColumbus$292K
Adam HanjeColumbus$272K
Khalid MumtazColumbus$254K
Madalina ButnariuColumbus$226K
Sanjay GarudaColumbus$189K

See the full list for Ohio →

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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