Quick answers
- Does Marissa H. Diaz accept Medicare assignment?
- Yes. Medicare's clinician data says Marissa H. Diaz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Marissa H. Diaz's NPI number?
- 1518346394. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marissa H. Diaz works
Medicare's Facility Affiliation Data lists Marissa H. Diaz at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Lady of the Sea General HospitalCut Off, LA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 191325
- Ochsner St Anne General HospitalRaceland, LA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 191324
Practice locations
Addresses where Marissa H. Diaz is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 141 Twin Oaks DrRaceland, LA 70394 (985) 537‑2666
- 144 W 134th PlCut Off, LA 70345 (985) 632‑6233
- 1514 Jefferson HwyNew Orleans, LA 70121 (504) 842‑3000
- 1516 Jefferson HwyNew Orleans, LA 70121 (504) 842‑3470
- 4608 Hwy 1Raceland, LA 70394 (985) 537‑8377
Group practices
Medicare enrollment lists Marissa H. Diaz as a member of these groups (CMS data updated October 2, 2026).
- Ochsner Clinic LLC2,864 clinicians in the group
- Lafourche Parish Hospital Service District No 122 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Raceland
Clinicians with the same Medicare primary specialty in Raceland, LA — not a recommendation.
Other clinicians in Ochsner Clinic LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518346394 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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