Mariza Oliver, NP
NPI 1477969848 · Family Nurse Practitioner · Brownsville, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariza Oliver, NP is a Family Nurse Practitioner provider in Brownsville, TX (NPI 1477969848).
Provider details
- NPI number
- 1477969848
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 648970 (TX)
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
11 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
1,792 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 387 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 336 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 260 | $104 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 241 | $10 |
| Ferritin (blood Protein) Level82728 | 127 | $13 |
| Iron Level83540 | 127 | $6 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 95 | 30 |
| Lidocaine/Prilocainebrand: Lidocaine-Prilocaine | 50 | 42 |
| Hydroxyurea | 32 | 11 |
| Anastrozole | 30 | 15 |
| Sodium Polystyrene Sulfon/Sorbbrand: Sps | 29 | 26 |
| Ondansetronbrand: Ondansetron Odt | 27 | 23 |
| Potassium Chloride | 25 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,129 across 66 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
- 2014-07-07
- Last updated
- 2015-01-28
Frequently asked questions
- What is Mariza Oliver's NPI number?
- Mariza Oliver's National Provider Identifier (NPI) is 1477969848, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariza Oliver's specialty?
- Mariza Oliver is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mariza Oliver located?
- Mariza Oliver's practice location on file with NPPES is 2150 N Expressway # 83, Brownsville, TX 78521-1561.
- What is Mariza Oliver's phone number?
- The practice phone number listed in the NPPES registry for Mariza Oliver is (956) 548-0810.
- Does Mariza Oliver accept Medicare?
- Mariza Oliver is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariza Oliver's NPI active?
- Yes — Mariza Oliver's NPI (1477969848) is active in the NPPES registry as of the last update on 2015-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.