Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-01-23 View official record Methodology

Covered recipient · General Payments record

MICHAEL F KNOX

Allopathic & Osteopathic Physicians Radiology Vascular & Interventional Radiology

NPI
1386663920
CMS profile
153170
Location
GRAND RAPIDS, MI

General Payments · PY2018–2024

$309,340.16

  • Reported across 203 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$16,493.11

35 records · 0 disputed

Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.

How these totals are calculated
  • The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
  • General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
  • Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2024 · sorted by reported total

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Inari Medical, Inc. $15,824.86 28
Penumbra, Inc. $290.80 2
BOSTON SCIENTIFIC CORPORATION $204.13 3
Sirtex Medical Inc $136.96 1
Stryker Corporation $36.36 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $567.20 9
PY2019 $1,409.08 12
PY2020 $16,157.49 15
PY2021 $117,553.71 51
PY2022 $109,026.69 48
PY2023 $48,132.88 33
PY2024 $16,493.11 35

Payment records · PY2024 (35)

Sorted by paying entity, then date · as published by CMS

Program year 2024 201820192020202120222023 Record-level detail is published for PY2024; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Boston Scientific Corporation $16.96 01/16/2024 Food and Beverage Undisputed 01/23/2026 1092531713 CMS
Boston Scientific Corporation $81.18 02/19/2024 Food and Beverage Undisputed 01/23/2026 1092531715 CMS
Boston Scientific Corporation $105.99 08/14/2024 Food and Beverage Undisputed 01/23/2026 1092531717 CMS
Inari Medical, Inc. $18.79 01/30/2024 Food and Beverage Undisputed 01/23/2026 1140122682 CMS
Inari Medical, Inc. $27.05 03/13/2024 Food and Beverage Undisputed 01/23/2026 1140122685 CMS
Inari Medical, Inc. $178.08 03/14/2024 Food and Beverage Undisputed 01/23/2026 1140122689 CMS
Inari Medical, Inc. $15.64 04/16/2024 Food and Beverage Undisputed 01/23/2026 1140122693 CMS
Inari Medical, Inc. $15.64 04/16/2024 Food and Beverage Undisputed 01/23/2026 1140122697 CMS
Inari Medical, Inc. $16.96 05/09/2024 Food and Beverage Undisputed 01/23/2026 1140122701 CMS
Inari Medical, Inc. $14.25 05/09/2024 Food and Beverage Undisputed 01/23/2026 1140122704 CMS
Inari Medical, Inc. $18.50 05/24/2024 Food and Beverage Undisputed 01/23/2026 1140122708 CMS
Inari Medical, Inc. $20.35 05/24/2024 Food and Beverage Undisputed 01/23/2026 1140122712 CMS
Inari Medical, Inc. $165.96 05/30/2024 Food and Beverage Undisputed 01/23/2026 1140122716 CMS
Inari Medical, Inc. $165.96 05/30/2024 Food and Beverage Undisputed 01/23/2026 1140122719 CMS
Inari Medical, Inc. $18.12 06/12/2024 Food and Beverage Undisputed 01/23/2026 1140122723 CMS
Inari Medical, Inc. $23.08 06/14/2024 Food and Beverage Undisputed 01/23/2026 1140122727 CMS
Inari Medical, Inc. $14.54 06/14/2024 Food and Beverage Undisputed 01/23/2026 1140122731 CMS
Inari Medical, Inc. $30.43 08/02/2024 Food and Beverage Undisputed 01/23/2026 1140122735 CMS
Inari Medical, Inc. $120.74 09/19/2024 Food and Beverage Undisputed 01/23/2026 1140122738 CMS
Inari Medical, Inc. $4,000.00 09/19/2024 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1140122742 CMS
Inari Medical, Inc. $1,000.00 09/19/2024 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1140122746 CMS
Inari Medical, Inc. $28.59 10/16/2024 Food and Beverage Undisputed 01/23/2026 1140122749 CMS
Inari Medical, Inc. $27.79 10/18/2024 Food and Beverage Undisputed 01/23/2026 1140122753 CMS
Inari Medical, Inc. $17.82 10/20/2024 Food and Beverage Undisputed 01/23/2026 1140122757 CMS
Inari Medical, Inc. $30.20 10/21/2024 Food and Beverage Undisputed 01/23/2026 1140122761 CMS
Inari Medical, Inc. $148.70 11/21/2024 Food and Beverage Undisputed 01/23/2026 1140122764 CMS
Inari Medical, Inc. $113.06 11/24/2024 Food and Beverage Undisputed 01/23/2026 1140122768 CMS
Inari Medical, Inc. $809.54 11/24/2024 Travel and Lodging Undisputed 01/23/2026 1140122772 CMS
Inari Medical, Inc. $285.07 11/24/2024 Travel and Lodging Undisputed 01/23/2026 1140122776 CMS
Inari Medical, Inc. $6,500.00 11/24/2024 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1140122779 CMS
Inari Medical, Inc. $2,000.00 11/24/2024 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1140122783 CMS
Penumbra, Inc. $149.53 03/05/2024 Food and Beverage Undisputed 01/23/2026 1076211250 CMS
Penumbra, Inc. $141.27 06/26/2024 Food and Beverage Undisputed 01/23/2026 1076211252 CMS
Sirtex Medical Inc $136.96 06/25/2024 Food and Beverage Undisputed 01/23/2026 1146587610 CMS
Stryker Corporation $36.36 04/18/2024 Food and Beverage Undisputed 01/23/2026 1119880622 CMS

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-01-23
Program years on this page
2018, 2019, 2020, 2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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