Dr. Michael Knox, MD

Diagnostic Radiology Grand Rapids, MI Male
NPI: 1386663920
Total Payments
$309,913
2024 Payments
$16,493
Companies
20
Transactions
211
Medicare Patients
5,012
Medicare Billing
$123,431

Payment Breakdown by Category

Consulting$227,400 (73.4%)
Other$56,550 (18.2%)
Food & Beverage$13,163 (4.2%)
Travel$12,800 (4.1%)

Payments by Nature

Nature of Payment Amount Transactions Share
Consulting Fee $227,400 39 73.4%
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $56,550 15 18.2%
Food and Beverage $13,163 129 4.2%
Travel and Lodging $12,800 28 4.1%

Top Paying Companies

Company Total Records Latest Year
Inari Medical, Inc. $305,736 163 $0 (2024)
Penumbra, Inc. $1,194 10 $0 (2024)
Boston Scientific Corporation $695.03 7 $0 (2024)
EKOS Corporation $408.31 7 $0 (2018)
Terumo Medical Corporation $329.34 5 $0 (2022)
Sirtex Medical Inc $278.16 2 $0 (2024)
TriSalus Life Sciences, Inc. $171.60 2 $0 (2023)
Medtronic USA, Inc. $147.00 1 $0 (2017)
Imperative Care, Inc $142.97 1 $0 (2023)
Medtronic, Inc. $137.66 2 $0 (2022)

Payment History by Year

Year Amount Transactions Top Company
2024 $16,493 35 Inari Medical, Inc. ($15,825)
2023 $48,133 33 Inari Medical, Inc. ($47,400)
2022 $109,027 48 Inari Medical, Inc. ($108,588)
2021 $117,554 51 Inari Medical, Inc. ($117,228)
2020 $16,157 15 Inari Medical, Inc. ($15,806)
2019 $1,409 12 Inari Medical, Inc. ($889.16)
2018 $567.20 9 EKOS Corporation ($142.30)
2017 $572.89 8 EKOS Corporation ($266.01)

All Payment Transactions

211 individual payment records from CMS Open Payments — Page 1 of 9

Date Company Product Nature Form Amount Type
11/24/2024 Inari Medical, Inc. CT THROMBECTOMY SYSTEM KIT (Device), FLOWTRIEVER CATHETER, S Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Cash or cash equivalent $6,500.00 General
Category: VTE
11/24/2024 Inari Medical, Inc. CT THROMBECTOMY SYSTEM KIT (Device), FLOWTRIEVER CATHETER, S Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Cash or cash equivalent $2,000.00 General
Category: VTE
11/24/2024 Inari Medical, Inc. CT THROMBECTOMY SYSTEM KIT (Device), FLOWTRIEVER CATHETER, S Travel and Lodging Cash or cash equivalent $809.54 General
Category: VTE
11/24/2024 Inari Medical, Inc. CT THROMBECTOMY SYSTEM KIT (Device), FLOWTRIEVER CATHETER, S Travel and Lodging Cash or cash equivalent $285.07 General
Category: VTE
11/24/2024 Inari Medical, Inc. CT THROMBECTOMY SYSTEM KIT (Device), FLOWTRIEVER CATHETER, S Food and Beverage Cash or cash equivalent $113.06 General
Category: VTE
11/21/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $148.70 General
Category: VTE
10/21/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $30.20 General
Category: VTE
10/20/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $17.82 General
Category: VTE
10/18/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $27.79 General
Category: VTE
10/16/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $28.59 General
Category: VTE
09/19/2024 Inari Medical, Inc. CT THROMBECTOMY SYSTEM KIT (Device), FLOWTRIEVER CATHETER, S Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Cash or cash equivalent $4,000.00 General
Category: VTE
09/19/2024 Inari Medical, Inc. CT THROMBECTOMY SYSTEM KIT (Device), FLOWTRIEVER CATHETER, S Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Cash or cash equivalent $1,000.00 General
Category: VTE
09/19/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $120.74 General
Category: VTE
08/14/2024 Boston Scientific Corporation Charger (Device) Food and Beverage In-kind items and services $105.99 General
Category: Charger_PI
08/02/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $30.43 General
Category: VTE
06/26/2024 Penumbra, Inc. Indigo System (Device) Food and Beverage Cash or cash equivalent $141.27 General
Category: Peripheral Intervention
06/25/2024 Sirtex Medical Inc LAVA LES (Liquid Embolic System) (Device) Food and Beverage Cash or cash equivalent $136.96 General
Category: Endovascular Embolization
06/14/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $23.08 General
Category: VTE
06/14/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $14.54 General
Category: VTE
06/12/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $18.12 General
Category: VTE
05/30/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $165.96 General
Category: VTE
05/30/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $165.96 General
Category: VTE
05/24/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $20.35 General
Category: VTE
05/24/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $18.50 General
Category: VTE
05/09/2024 Inari Medical, Inc. FLOWTRIEVER CATHETER, S (Device), CT THROMBECTOMY SYSTEM KIT Food and Beverage In-kind items and services $16.96 General
Category: VTE
123…9»

Medicare Billing by Year

Year Procedures Beneficiaries Services Submitted Medicare Paid
2023 32 2,150 2,296 $148,600 $29,304
2022 22 618 671 $96,396 $20,742
2021 29 1,137 1,237 $154,223 $34,240
2020 33 1,107 1,194 $169,693 $39,145
Total Patients
5,012
Total Services
5,398
Medicare Billing
$123,431
Procedure Codes
138

All Medicare Procedures & Services

138 procedure records from CMS Medicare Utilization — Page 1 of 6

HCPCS Description Setting Year Patients Services Charges Medicare Paid Ratio
71046 X-ray of chest, 2 views Facility 2023 443 455 $18,655 $3,416 18.3%
36561 Insertion of central venous tube with port (5 years or older) Facility 2023 15 15 $16,530 $3,260 19.7%
71045 X-ray of chest, 1 view Facility 2023 369 448 $15,680 $2,913 18.6%
36558 Insertion of tunneled central venous tube for infusion (5 years or older) Facility 2023 11 12 $10,404 $2,348 22.6%
32555 Aspiration of fluid from chest cavity using imaging guidance Facility 2023 23 26 $10,320 $2,226 21.6%
77012 Review by radiologist of ct guidance for needle placement Facility 2023 31 32 $7,296 $1,709 23.4%
32408 Core needle biopsy of lung or center cavity of chest (mediastinum), accessed through skin Facility 2023 13 13 $6,019 $1,522 25.3%
71046 X-ray of chest, 2 views Office 2023 171 176 $7,216 $1,027 14.2%
74018 X-ray of abdomen, 1 view Facility 2023 135 140 $5,740 $922.20 16.1%
10005 Fine needle aspiration biopsy using ultrasound guidance, first growth Facility 2023 17 17 $3,927 $912.00 23.2%
62328 Removal of spinal fluid with lower back spinal tap for diagnostic test using imaging guidance Facility 2023 14 14 $3,878 $833.62 21.5%
99152 Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes Facility 2023 81 83 $3,154 $792.63 25.1%
73502 X-ray of hip, 2-3 views Facility 2023 94 94 $3,854 $727.38 18.9%
76380 Limited or follow-up ct scan Facility 2023 19 19 $3,097 $670.51 21.7%
72100 X-ray of lower and sacral spine, 2-3 views Facility 2023 78 78 $2,964 $620.84 20.9%
76937 Ultrasonic guidance for blood vessel access Facility 2023 44 47 $2,867 $512.63 17.9%
73030 X-ray of shoulder, minimum of 2 views Facility 2023 70 72 $2,664 $485.88 18.2%
77001 Fluoroscopic guidance for insertion or removal of central vein access device Facility 2023 28 31 $2,480 $422.76 17.0%
73030 X-ray of shoulder, minimum of 2 views Office 2023 42 48 $1,776 $322.00 18.1%
73502 X-ray of hip, 2-3 views Office 2023 41 42 $1,722 $291.20 16.9%
76942 Ultrasonic guidance for needle placement Facility 2023 12 12 $1,452 $282.72 19.5%
72040 X-ray of upper spine, 2-3 views Facility 2023 33 34 $1,360 $266.24 19.6%
72100 X-ray of lower and sacral spine, 2-3 views Office 2023 33 33 $1,254 $249.60 19.9%
73562 X-ray of knee, 3 views Facility 2023 31 35 $1,155 $241.73 20.9%
72110 X-ray of lower and sacral spine, minimum of 4 views Facility 2023 25 25 $1,375 $221.26 16.1%
123…6»

About Dr. Michael Knox, MD

Dr. Michael Knox, MD is a Diagnostic Radiology healthcare provider based in Grand Rapids, Michigan. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 07/18/2006. The National Provider Identifier (NPI) number assigned to this provider is 1386663920.

According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. Michael Knox, MD has received a total of $309,913 in payments from pharmaceutical and medical device companies, with $16,493 received in 2024. These payments were reported across 211 transactions from 20 companies. The most common payment nature is "Consulting Fee" ($227,400).

As a Medicare-enrolled provider, Knox has provided services to 5,012 Medicare beneficiaries, totaling 5,398 services with total Medicare billing of $123,431. Data is available for 4 years (2020–2023), covering 138 distinct procedure/service records.

Practice Information

  • Specialty Diagnostic Radiology
  • Other Specialties Vascular & Interventional Radiology
  • Location Grand Rapids, MI
  • Active Since 07/18/2006
  • Last Updated 08/05/2009
  • Taxonomy Code 2085R0202X
  • Entity Type Individual
  • NPI Number 1386663920

Products in Payments

  • CT THROMBECTOMY SYSTEM KIT (Device) $225,160
  • FLOWTRIEVER CATHETER, S (Device) $63,881
  • FlowTriever (Device) $16,695
  • Indigo System (Device) $622.40
  • EKOSONIC (Device) $408.31
  • Indigo (Device) $340.00
  • Penumbra Ruby Coil (Device) $231.90
  • TRINAV INFUSION SYSTEM (Device) $171.60
  • HYDROPEARL (Device) $148.33
  • KYPHON Balloon Kyphoplasty (Device) $147.00
  • EMBOLD Fibered (Device) $145.75
  • SYMPHONY CATHETER (Device) $142.97
  • SIR-Spheres Microspheres (Device) $141.20
  • Glidesheath (Device) $137.06
  • LAVA LES (Liquid Embolic System) (Device) $136.96
  • Neuwave (Device) $134.11
  • THERASPHERE-BIO (Device) $128.77
  • Cook Medical Self-Expanding Stent (Device) $124.95
  • ABRE (Device) $118.49
  • General - Catheters (Device) $118.40

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Data Sources

Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.

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