Quick answers
- Which hospitals does John Grezaffi work at?
- Medicare's official clinician data lists John Grezaffi at 5 hospitals: Baton Rouge General Medical Center, Bolivar Medical Center, North Oaks Medical Center, Ochsner Medical Center - Baton Rouge and Southwest MS Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Grezaffi see patients?
- Medicare's clinician data lists 9 practice locations, including Baton Rouge, LA, Hammond, LA and Cleveland, MS. Call before your visit to confirm the address.
- What is John Grezaffi's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does John Grezaffi accept Medicare assignment?
- Yes. Medicare's clinician data says John Grezaffi accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John Grezaffi?
- (985) 230-1683, as listed in official Medicare / NPI Registry data.
- What is John Grezaffi's NPI number?
- 1659575173. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Grezaffi works
Medicare's Facility Affiliation Data lists John Grezaffi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baton Rouge General Medical CenterBaton Rouge, LA · Acute Care Hospital · CCN 190065
- Bolivar Medical CenterCleveland, MS · Acute Care Hospital · CCN 250093
- North Oaks Medical CenterHammond, LA · Acute Care Hospital · CCN 190015
- Ochsner Medical Center - Baton RougeBaton Rouge, LA · Acute Care Hospital · CCN 190202
- Southwest MS Regional Medical CenterMcComb, MS · Acute Care Hospital · CCN 250097
Practice locations
Addresses where John Grezaffi is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 10101 Park Rowe Ave, Suite 200Baton Rouge, LA 70810
- 15790 Paul Vega MD Drive Radiology De, North Oaks Medical Center HospitalHammond, LA 70403 (985) 230‑1683
- 17000 Medical Ctr DrBaton Rouge, LA 70816 (225) 761‑5200
- 3600 Florida StBaton Rouge, LA 70806 (225) 381‑6505
- 7373 Perkins RdBaton Rouge, LA 70808 (225) 246‑9790
Group practices
Medicare enrollment lists John Grezaffi as a member of these groups (CMS data updated 2026-10-02).
- Ochsner Clinic LLC2,864 clinicians in the group
- North Oaks Medical Center LLC320 clinicians in the group
- Baton Rouge Clinic, a Medical Corporation287 clinicians in the group
- Baton Rouge General Physicians Inc191 clinicians in the group
- Neuromedical Center118 clinicians in the group
- Baton Rouge Radiology Group Inc39 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Baton Rouge
Clinicians with the same Medicare primary specialty in Baton Rouge, LA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In New Orleans |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659575173 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians