Has Christopher Ko, MD received payments from drug or device companies?

Yes. Drug and device makers reported $9,686 in general payments to Christopher Ko, MD across 104 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 Christopher Ko, 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 Christopher Ko, 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.

Christopher Ko, MD

Gastroenterology · Ann Arbor, MINPI 1497142301

Payments from drug & device makers

$9,686in general payments, 2019–2025

Across 104 payments — averaging $93.13 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Boston Scientific$7K
Merit Medical Systems Inc$1K
Conmed Corporation$732
Fujifilm Healthcare Americas Corporation$298
Regeneron Healthcare Solutions, Inc.$116
Medtronic$89
plus $32 from 1 others

What the payments were for

Consulting fees$1,40014%
Travel & lodging$2,43025%
Food & beverage$5,85660%

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
Boston Scientific	89	$6,993
Merit Medical Systems Inc	4	$1,425
Conmed Corporation	6	$732
Fujifilm Healthcare Americas Corporation	2	$298
Regeneron Healthcare Solutions, Inc.	1	$116
Medtronic	1	$89
Cook Medical LLC	1	$32

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

$9,686 in reported general payments places this provider in the 75th percentile of 497 gastroenterology providers in Michigan.

See all gastroenterology providers in Michigan →

Medicare billing

Part B allowed, 2024

$88,158

Medicare patients

182

Services billed

647

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
Omeprazole	15	$341
Levofloxacin	28	$44

Paid to pharmacies, not to this prescriber.

Other gastroenterology in Ann Arbor

Jeffery BerinsteinAnn Arbor$3.3M
Peter HigginsAnn Arbor$2.4M
Frederick AskariAnn Arbor$1.4M
Ryan StidhamAnn Arbor$656K
Shanti EswaranAnn Arbor$575K
Philip SchoenfeldAnn Arbor$539K
Michelle Muza-MoonsAnn Arbor$481K
Anna LokAnn Arbor$434K
Joan ChenAnn Arbor$409K
Hari ConjeevaramAnn Arbor$352K

See the full list for Michigan →

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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