Michael F. Knox, MD
NPI 1386663920ActiveIndividual· Radiology, Vascular & Interventional Radiology· Grand Rapids, MI
Radiology, Vascular & Interventional Radiology (MD) in Grand Rapids, Michigan, trained at University of Texas Southwestern Medical School at Dallas (class of 1979). Mostly services rather than prescriptions: Medicare paid $65,422 for 1,452 patients in 2024, with only 20 Part D claims. Terumo Medical Corporation was the largest of 7 companies reporting payments in 2025, $2,997 in all, mostly food and beverage.
Overview
| NPI | 1386663920 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 18, 2006 |
| Last updated in NPPES | Aug 5, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Vascular & Interventional Radiology Primary | 2085R0204X | 4301077340 | MI |
| Radiology, Diagnostic Radiology | 2085R0202X | 4301077340 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Interventional Radiology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,452 |
|---|---|
| Services billed | 2,246 across 176 procedure codes |
| Paid by Medicare | $65,422 |
Part D prescriptions in 2024
| Prescriptions (claims) | 20 · 20 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $49.46 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Interventional Radiology |
| Secondary specialties | Diagnostic Radiology |
Medical group
- Advanced Radiology Services PCGrand Rapids, MI · 253 clinicians
Hospital affiliations
- Bronson Battle Creek HospitalBattle Creek, MI
- Bronson Methodist HospitalKalamazoo, MI
- Holland HospitalHolland, MI
- Lakeland Hospital, St JosephSt Joseph, MI
- Spectrum HealthGrand Rapids, MI
Industry payments (Open Payments)
- 2025$2,997 · 29 payments from 7 companies
- 2024$16,493 · 35 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Terumo Medical Corporation | $945.61 | 9 |
| Stryker Corporation | $877.54 | 9 |
| Penumbra, Inc. | $499.49 | 5 |
| Siemens Medical Solutions USA, Inc. | $260.08 | 2 |
| Okami Medical, Inc. | $198.00 | 1 |
What the 2025 payments were for
- Food and Beverage$2,237 · 25 payments
- Travel and Lodging$760.15 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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