Mariana Ontiveros, APRN
NPI 1912696493 · Primary Care Nurse Practitioner · Live Oak, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariana Ontiveros, APRN is a Primary Care Nurse Practitioner provider in Live Oak, TX (NPI 1912696493).
Provider details
- NPI number
- 1912696493
- Entity type
- Individual
- Primary specialty
- Primary Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 1114788 (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
3 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
548 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 | 260 | $103 |
| Ultrasound Study of Arm and Leg Arteries93922 | 81 | $65 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 44 | $15 |
| Advance Care Planning, First 30 Minutes99497 | 41 | $67 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 36 | $11 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 36 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 67 | 30 |
| Atorvastatin Calcium | 63 | 32 |
| Losartan Potassium | 59 | 27 |
| Gabapentin | 58 | 20 |
| Levothyroxine Sodium | 49 | 21 |
| Metformin Hcl | 40 | 18 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$72 across 5 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
- 2023-05-02
- Last updated
- 2023-05-02
- Certified
- 2023-05-02
Frequently asked questions
- What is Mariana Ontiveros's NPI number?
- Mariana Ontiveros's National Provider Identifier (NPI) is 1912696493, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariana Ontiveros's specialty?
- Mariana Ontiveros is listed in the NPPES registry with a primary specialty of Primary Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mariana Ontiveros located?
- Mariana Ontiveros's practice location on file with NPPES is 12410 Toepperwein Rd, Live Oak, TX 78233-3230.
- What is Mariana Ontiveros's phone number?
- The practice phone number listed in the NPPES registry for Mariana Ontiveros is (210) 742-6555.
- Does Mariana Ontiveros accept Medicare?
- Mariana Ontiveros is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariana Ontiveros's NPI active?
- Yes — Mariana Ontiveros's NPI (1912696493) is active in the NPPES registry as of the last update on 2023-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.