Marissa Alvero, NP
NPI 1538834130ActiveIndividual· Nurse Practitioner, Family· Slidell, LA
Nurse Practitioner, Family (NP) with Ochsner Clinic LLC, practicing in Slidell, Louisiana. Their prescriptions cost Medicare Part D more than their services did: $385,916 for 1,393 claims, against $14,828 paid for services in 2024. Takeda Pharmaceuticals U.S.A., Inc. was the largest of 5 companies reporting payments in 2025, $171.82 in all, mostly food and beverage. Lists Ochsner Medical Center - Baton Rouge and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1538834130 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Aug 16, 2021 |
| Last updated in NPPES | Oct 14, 2021 |
| Certified by provider | Oct 14, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 220798 | 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 - Nurse Practitioner (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 215 |
|---|---|
| Services billed | 263 across 5 procedure codes |
| Paid by Medicare | $14,828 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,393 · 2,736 30-day fills |
|---|---|
| Patients | 505 |
| Total drug cost | $385,916 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Ochsner Clinic LLCNew Orleans, LA · 2,864 clinicians
Hospital affiliations
- Ochsner Medical Center - Baton RougeBaton Rouge, LA
- Ochsner Medical Center AcuteNew Orleans, LA
- Slidell Memorial HospitalSlidell, LA
- St Tammany Parish HospitalCovington, LA
Industry payments (Open Payments)
- 2025$171.82 · 9 payments from 5 companies
- 2024$53.37 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $66.16 | 3 |
| Genzyme Corporation | $43.95 | 2 |
| Phathom Pharmaceuticals, Inc. | $22.11 | 2 |
| Aimmune Therapeutics, Inc. | $22.04 | 1 |
| Ardelyx, Inc. | $17.56 | 1 |
What the 2025 payments were for
- Food and Beverage$171.82 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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