Has Chance Matthiesen, MD received payments from drug or device companies?

Yes. Drug and device makers reported $279 in general payments to Chance Matthiesen, MD across 9 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 Chance Matthiesen, 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 Chance Matthiesen, 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.

Chance Matthiesen, MD

Radiation Oncology · Joplin, MONPI 1821289893

Payments from drug & device makers

$279in general payments, 2019–2025

Across 9 payments — averaging $31.02 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Sanofi$104
Regeneron Healthcare Solutions, Inc.$70
Bayer$36
AbbVie$35
Pfizer$17
Boston Scientific$17

What the payments were for

Food & beverage$279100%

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
Sanofi	1	$104
Regeneron Healthcare Solutions, Inc.	3	$70
Bayer	2	$36
AbbVie	1	$35
Pfizer	1	$17
Boston Scientific	1	$17

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.

LIBTAYO$104

How this compares

$279 in reported general payments places this provider in the 25th percentile of 123 radiation oncology providers in Missouri.

See all radiation oncology providers in Missouri →

Medicare billing

Part B allowed, 2024

$390,150

Medicare patients

344

Services billed

4,816

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
Tamsulosin Hcl	115	$1,128
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen	49	$860
Oxycodone Hcl	33	$620
Dexamethasone	33	$566
Lidocaine Hcl ViscousLidocaine Hcl	18	$468
Morphine Sulfate ErMorphine Sulfate	13	$434
Ondansetron OdtOndansetron	22	$221
SsdSilver Sulfadiazine	24	$217
Methylprednisolone	18	$170
Silver Sulfadiazine	14	$102
Prednisone	14	$86
Azithromycin	13	$40
Alprazolam	20	$35

Paid to pharmacies, not to this prescriber.

Other radiation oncology in Joplin

Jose Pacheco GilJoplin$2K
Sana KaramSaint Louis$2.7M
Hiram GaySaint Louis$2M
Clifford RobinsonSaint Louis$1.5M
Lauren HenkeSaint Louis$1.2M
Pamela SamsonSaint Louis$752K
Jeffrey BradleySaint Louis$712K
Jeff MichalskiSaint Louis$628K
Shahed BadiyanSaint Louis$479K
Shalina Gupta-BurtNorth Kansas City$426K

See the full list for Missouri →

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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