Physician profile

Matthew Michael Greiner

Surgical · Knoxville, TN

NPI 1942238175

$2,126.81

in general payments reported to CMS, 2019-2025

24 companies · $550 in 2025

The $550 reported for 2025 was more than what 82% of Surgical providers received nationally (typical 2025 total: $146).

See the full distribution for Surgical

Payments by year

General payments by program year, as reported to CMS.

What the payments were for

Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.

View as a table
Payment typeAmount (2023-2025)
Food and Beverage$978.02

Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.

Who reported paying

General payments only, as reported to CMS. Product names cover 2023-2025.

CompanyGeneral paymentsYearsTop products
Abbvie INC. $753.22 2021-2024
Qol Medical, LLC $384.59 2021-2025 Sucraid, Sucraid
Genzyme Corporation $256.68 2022-2025
Nestle Healthcare Nutrition INC. $158.56 2021-2023
Takeda Pharmaceuticals U.S.A., INC. $65.39 2022-2025 Gattex, Eohilia
Regeneron Healthcare Solutions, INC. $48.07 2023-2025 Dupixent
Astrazeneca Pharmaceuticals LP $41.63 2024 Airsupra
Medtronic, INC. $40.96 2022-2024 Interstim
Celltrion USA INC. $40.41 2025 Vegzelma
Axsome Therapeutics, INC. $34.92 2024 Auvelity
Mirum Pharmaceuticals, INC. $33.17 2022
Ultragenyx Pharmaceutical INC. $30.96 2022
Coloplast Corp $28.29 2025
Alexion Pharmaceuticals, INC. $26.65 2022
Ipsen Biopharmaceuticals, INC $26.23 2025 Bylvay
Show all 24 companies
CompanyGeneral paymentsYearsTop products
Vivus LLC $23.74 2021
Novo Nordisk INC $18.76 2025 Wegovy
Madrigal Pharmaceuticals $18.27 2025 Rezdiffra
Phadia US INC. $18.25 2022
Genentech USA, INC. $17.98 2024 Xolair
Albireo Pharma, INC. $16.54 2022
Sandoz INC. $16.45 2024 Hyrimoz
Pfizer INC. $13.66 2021
Janssen Biotech, INC. $13.43 2023 Simponi, Simponi Aria, Remicade

Drugs and devices associated with these payments

CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.

If you want to bring it up

Most clinicians are glad to talk about this. A respectful way in:

These are normal questions. A good clinician will welcome them.

Share this page

Payment summary

Matthew Michael Greiner

$2,126.81

in general payments reported 2019-2025

Years
2021-2025
Top company
Abbvie INC.
Context
The $550 reported for 2025 was more than what 82% of Surgical providers received nationally (typical 2025 total: $146).

https://glasscript.com/doctor/10425274/matthew-michael-greiner

Source: CMS Open Payments, program years 2019-2025. Payments are legal and often routine.

Keep an eye on this page

Get an email when the next June refresh changes this page. No account needed.

Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.