John Grezaffi Jr., MD
NPI 1659575173ActiveIndividual· Radiology, Diagnostic Radiology· Baton Rouge, LA
Radiology, Diagnostic Radiology (MD) in Baton Rouge, Louisiana, trained at Louisiana State University School of Medicine in New Orleans (class of 2005). Medicare paid $149,496 for services to 2,327 patients in 2024. Boston Scientific Corporation was the largest of 7 companies reporting payments in 2025, $6,816 in all, mostly food and beverage.
Overview
| NPI | 1659575173 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 11, 2007 |
| Last updated in NPPES | Mar 21, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Diagnostic Radiology Primary | 2085R0202X | 204408 | LA |
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 - Diagnostic Radiology (LA); Practitioner - Diagnostic Radiology (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,327 |
|---|---|
| Services billed | 10,256 across 236 procedure codes |
| Paid by Medicare | $149,496 |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in New Orleans |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Diagnostic Radiology |
Medical groups
- Ochsner Clinic LLCNew Orleans, LA · 2,864 clinicians
- North Oaks Medical Center LLCHammond, LA · 320 clinicians
- Baton Rouge Clinic, A Medical CorporationBaton Rouge, LA · 287 clinicians
- Baton Rouge General Physicians IncBaton Rouge, LA · 191 clinicians
- Neuromedical CenterBaton Rouge, LA · 118 clinicians
- Baton Rouge Radiology Group IncBaton Rouge, LA · 39 clinicians
Hospital affiliations
- Baton Rouge General Medical CenterBaton Rouge, LA
- Bolivar Medical CenterCleveland, MS
- North Oaks Medical CenterHammond, LA
- Ochsner Medical Center - Baton RougeBaton Rouge, LA
- Southwest Ms Regional Medical CenterMcComb, MS
Industry payments (Open Payments)
- 2025$6,816 · 40 payments from 7 companies
- 2024$731.68 · 15 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $3,002 | 20 |
| Abbvie Inc. | $1,800 | 1 |
| Terumo Medical Corporation | $1,626 | 13 |
| Sirtex Medical Inc | $164.79 | 2 |
| Imperative Care, Inc | $124.01 | 1 |
What the 2025 payments were for
- Food and Beverage$2,931 · 31 payments
- Travel and Lodging$2,086 · 8 payments
- Consulting Fee$1,800 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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