Medicare Enrolled
Dr. Michael Knox, MD
Radiation Oncology · Grand Rapids, MI
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Consulting-driven
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Knox from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Knox
Dr. Michael Knox is a radiation oncology specialist in Grand Rapids, MI, with 20 years of NPI registration. Based on federal Medicare data, Dr. Knox performed 1,350 Medicare services across 1,230 unique beneficiaries.
Between the years covered by Open Payments, Dr. Knox received a total of $309,340 from 19 pharmaceutical and/or device companies across 203 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiation oncology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Knox is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years in practice
▲ 1,350 Medicare services
$309,340 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,350
Medicare services
Bottom 41% in MI for radiation oncology
1,230
Unique beneficiaries
$17
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~68 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Chest X-ray, 1 view An X-ray image of the chest taken from a single angle. This imaging test is used to visualize the structures within the chest cavity. |
448 | $7 | $35 |
| Chest X-ray, 2 views An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall. |
176 | $6 | $41 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
83 | $10 | $38 |
| Shoulder X-ray, 2+ views An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures. |
48 | $7 | $37 |
| Ultrasound guidance for blood vessel access Use of ultrasound imaging to help locate and access a blood vessel. This guidance assists healthcare providers in performing procedures such as inserting IV lines or drawing blood. |
47 | $11 | $61 |
| Hip X-ray, 2-3 views An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures. |
42 | $7 | $41 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
34 | $6 | $41 |
| X-ray of lower and sacral spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area. |
33 | $8 | $38 |
| Radiologist review of CT-guided needle placement A radiologist reviews the CT imaging used to guide the placement of a needle. |
32 | $53 | $228 |
| Knee X-ray, 3 views An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures. |
31 | $6 | $33 |
| Fluoroscopic guidance for central vein access device Use of live X-ray imaging to guide the placement or removal of a central vein access device. |
31 | $14 | $80 |
| Chest fluid aspiration with imaging guidance This procedure involves removing fluid from the chest cavity using imaging technology to guide the needle placement. |
26 | $86 | $397 |
| Knee X-ray, 1-2 views An X-ray imaging test of the knee joint using one to two different angles to visualize the bones and surrounding structures. |
24 | $6 | $31 |
| Ankle X-ray, minimum 3 views An X-ray imaging test of the ankle that captures at least three different angles to evaluate the bones and joints. |
23 | $6 | $32 |
| X-ray of thigh bone, minimum 2 views An X-ray imaging test of the thigh bone using at least two different angles to visualize the bone structure. |
22 | $7 | $34 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
22 | $6 | $42 |
| Abdominal X-ray, 2 views An X-ray imaging test of the abdomen using two different angles to visualize internal structures. |
20 | $8 | $41 |
| Limited or follow-up CT scan A computed tomography scan that is limited in scope or performed as a follow-up to a previous examination. |
19 | $35 | $163 |
| Ultrasound-guided fine needle aspiration biopsy, first lesion A biopsy procedure where a thin needle is used to collect tissue samples from a growth, guided by ultrasound imaging. This code applies to the first lesion or mass sampled during the session. |
17 | $54 | $231 |
| Wrist X-ray, minimum 3 views An imaging test using X-rays to capture at least three different angles of the wrist bones and joints. |
17 | $6 | $32 |
| X-ray of middle spine, 3 views An X-ray imaging test that captures three different views of the middle section of the spine to evaluate its structure. |
16 | $8 | $40 |
| Central venous port insertion A surgical procedure to place a small reservoir under the skin for long-term access to the bloodstream. The device is connected to a vein to allow for repeated medication administration or blood draws. |
15 | $217 | $1,102 |
| X-ray of hand, minimum of 3 views An X-ray imaging test of the hand that captures at least three different angles to visualize the bones and joints. |
15 | $5 | $32 |
| Lumbar puncture with imaging guidance A procedure to remove spinal fluid from the lower back for diagnostic testing, performed using imaging guidance. |
14 | $60 | $277 |
| Core needle biopsy of lung or mediastinum A procedure to remove a small tissue sample from the lung or the space between the lungs using a needle inserted through the skin. |
13 | $117 | $463 |
| X-ray of lower and sacral spine, minimum 6 views An X-ray imaging test that captures at least six views of the lower back and sacral spine to evaluate bone structure and alignment. |
13 | $11 | $65 |
| Insertion of tunneled central venous catheter for infusion, age 5+ A surgical procedure to place a long-term catheter into a large vein for delivering medications or fluids. The catheter is tunneled under the skin to reduce infection risk and provide stable access for patients aged 5 and older. |
12 | $196 | $867 |
| X-ray of upper spine, 2-3 views An X-ray imaging test of the upper spine using two to three different angles to visualize the bones and structures. |
12 | $7 | $40 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
12 | $24 | $121 |
| X-ray of upper spine, 4-5 views An X-ray imaging test of the upper spine using 4 to 5 different views to visualize the bones and structures in that area. |
11 | $9 | $54 |
| X-ray of lower and sacral spine, minimum of 4 views An X-ray imaging test of the lower back and sacrum using at least four different angles to visualize the bones and joints. |
11 | $10 | $55 |
| X-ray of both hips, minimum of 5 views An X-ray imaging test that captures at least five different views of both hip joints to evaluate bone structure and alignment. |
11 | $12 | $58 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
0.9% high complexity
11.0% medium
88.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$309,340
Total received (2018-2024)
Avg $44,191/year across 7 years
Top 1% in MI for radiation oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
19
Companies
203
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$241,622 (78.1%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$63,225 (20.4%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$4,493 (1.5%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$16,493
2023
$48,133
2022
$109,027
2021
$117,554
2020
$16,157
2019
$1,409
2018
$567
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Inari Medical, Inc.
$15,825
Penumbra, Inc.
$291
Boston Scientific Corporation
$204
Sirtex Medical Inc
$137
Stryker Corporation
$36
Top 3 companies account for 98.9% of 2024 payments
All-time payments by company (2018-2024) ›
Inari Medical, Inc.
$305,736
Penumbra, Inc.
$1,194
Boston Scientific Corporation
$468
Sirtex Medical Inc
$278
BOSTON SCIENTIFIC CORPORATION
$227
Terumo Medical Corporation
$192
TriSalus Life Sciences, Inc.
$172
Imperative Care, Inc
$143
EKOS Corporation
$142
Medtronic, Inc.
$138
Ethicon US, LLC
$134
Biocompatibles, Inc.
$129
Cook Medical LLC
$125
W. L. Gore & Associates, Inc.
$113
Endologix, Inc.
$60
Stryker Corporation
$36
Abbott Laboratories
$24
DePuy Synthes Sales Inc.
$17
AngioDynamics, Inc.
$11
Top 3 companies account for 99.4% of all-time payments
Associated products mentioned in payments ›
ABRE · AZUR · AZUR CX DETACHABLE · CT THROMBECTOMY SYSTEM KIT · Charger · Concerto · Cook Medical Self-Expanding Stent · EKOSONIC · EMBOLD Fibered · FLOWTRIEVER CATHETER · FlowTriever · General - Catheters · General - IO Ablation · HYDROPEARL · Indigo · Indigo System · JETI PERIPHERAL CATHETER · LAVA LES (Liquid Embolic System) · Neuwave · ONCOZENE · Penumbra Ruby Coil · S · SIR-Spheres Microspheres · SPINEJACK · SYMPHONY CATHETER · THERASPHERE-BIO · TRINAV INFUSION SYSTEM · TRUFILL · TheraSphere Y90 Glass Microspheres 10 GBq · VIATORR TIPS Endoprosthesis
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
The majority of payments (78%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 1% for radiation oncology in MI.
Geographic Context
Radiation oncologists within 10 mi
246
Per 100K population
37.3
County median income
$80,390
Nearest hospital
SPECTRUM HEALTH
5.4 mi
5.4 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Knox is a mixed practice specialist, with moderate Medicare volume, with consulting-driven industry engagement in the top 1% of MI peers, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Knox experienced with chest x-ray, 1 view?
Based on Medicare claims data, Dr. Knox performed 448 chest x-ray, 1 view services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Knox receive payments from pharmaceutical companies?
Yes. Dr. Knox received a total of $309,340 from 19 companies across 203 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Knox's costs compare to other radiation oncologists in Grand Rapids?
Dr. Knox's average Medicare payment per service is $17. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Knox) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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