Ronaldo Cruz Mamaril, NP
NPI 1013301266ActiveIndividual· Nurse Practitioner· Charlotte, NC
Nurse Practitioner (NP) with South Bay Gastroenterology Medical Group, practicing in Charlotte, North Carolina. Their prescriptions cost Medicare Part D more than their services did: $135,886 for 352 claims, against $17,429 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 13 companies reporting payments in 2025, $787.84 in all, mostly food and beverage. Lists Torrance Memorial Medical Center as a hospital affiliation.
Overview
| NPI | 1013301266 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Mar 26, 2015 |
| Last updated in NPPES | Jul 15, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 347604 | NC |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 234 |
|---|---|
| Services billed | 262 across 6 procedure codes |
| Paid by Medicare | $17,429 |
Part D prescriptions in 2024
| Prescriptions (claims) | 352 · 534 30-day fills |
|---|---|
| Patients | 178 |
| Total drug cost | $135,886 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- South Bay Gastroenterology Medical GroupTorrance, CA · 12 clinicians
Hospital affiliation
- Torrance Memorial Medical CenterTorrance, CA
Industry payments (Open Payments)
- 2025$787.84 · 36 payments from 13 companies
- 2024$729.94 · 36 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $252.50 | 10 |
| Abbvie Inc. | $158.82 | 9 |
| Ardelyx, Inc. | $82.66 | 3 |
| Genzyme Corporation | $71.94 | 3 |
| Regeneron Healthcare Solutions, Inc. | $53.00 | 2 |
What the 2025 payments were for
- Food and Beverage$787.84 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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