Ismael Guerra Jr., DNP FNPC
NPI 1528432267ActiveIndividual· Nurse Practitioner, Family· Brownsville, TX
Nurse Practitioner, Family (DNP FNPC) with Family Allergy and Asthma Center PA, practicing in Brownsville, Texas. Their prescriptions cost Medicare Part D more than their services did: $22,544 for 370 claims, against $1,777 paid for services in 2024. Sanofi-Aventis U.S. LLC was the largest of 8 companies reporting payments in 2025, $702.33 in all, mostly food and beverage.
Overview
| NPI | 1528432267 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DNP FNPC |
| Sole proprietor | Yes |
| NPI issued | Nov 18, 2015 |
| Last updated in NPPES | Apr 3, 2020 |
| Certified by provider | Apr 3, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | AP129789 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 20 |
|---|---|
| Services billed | 35 across 1 procedure code |
| Paid by Medicare | $1,777 |
Part D prescriptions in 2024
| Prescriptions (claims) | 370 · 690 30-day fills |
|---|---|
| Patients | 86 |
| Total drug cost | $22,544 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Family Allergy and Asthma Center PABrownsville, TX · 2 clinicians
Industry payments (Open Payments)
- 2025$702.33 · 30 payments from 8 companies
- 2024$247.67 · 13 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sanofi-Aventis U.S. LLC | $163.70 | 9 |
| Ars Pharmaceuticals Operations, Inc. | $142.66 | 8 |
| Galderma Laboratories, L.P. | $123.20 | 1 |
| Novartis Pharmaceuticals Corporation | $69.63 | 3 |
| Regeneron Healthcare Solutions, Inc. | $68.35 | 3 |
What the 2025 payments were for
- Food and Beverage$702.33 · 30 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 120 family nurse practitioners in Brownsville · All family nurse practitioners in Texas