Marissa Alvero, NP
NPI 1538834130 · Family Nurse Practitioner · Slidell, LA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Alvero, NP is a Family Nurse Practitioner provider in Slidell, LA (NPI 1538834130).
Provider details
- NPI number
- 1538834130
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 220798 (LA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
4 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
259 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 217 | $77 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $51 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 19 | $103 |
Typical Medicare-allowed amounts for these services range $51–$103 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 336 | 156 |
| Omeprazole | 178 | 80 |
| Linaclotidebrand: Linzess | 156 | 72 |
| Dicyclomine Hcl | 112 | 58 |
| Famotidine | 107 | 67 |
| Sucralfate | 97 | 83 |
| Lubiprostone | 48 | 23 |
| Esomeprazole Magnesium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$53 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-08-16
- Last updated
- 2021-10-14
- Certified
- 2021-10-14
Frequently asked questions
- What is Marissa Alvero's NPI number?
- Marissa Alvero's National Provider Identifier (NPI) is 1538834130, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Alvero's specialty?
- Marissa Alvero is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marissa Alvero located?
- Marissa Alvero's practice location on file with NPPES is 1850 Gause Blvd E Ste 301, Slidell, LA 70461-5434.
- What is Marissa Alvero's phone number?
- The practice phone number listed in the NPPES registry for Marissa Alvero is (985) 639-3777.
- Does Marissa Alvero accept Medicare?
- Marissa Alvero is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Alvero's NPI active?
- Yes — Marissa Alvero's NPI (1538834130) is active in the NPPES registry as of the last update on 2021-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.