Juan C. Zambrano, M.D.
NPI 1487693222ActiveIndividual· Allergy & Immunology· Houston, TX
Allergy & Immunology (M.D.) with Southwest Asthma and Allergy Associates, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $1,501,927 for 887 claims, against $26,030 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 25 companies reporting payments in 2025, $8,184 in all, mostly food and beverage.
Overview
| NPI | 1487693222 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 6, 2006 |
| Last updated in NPPES | May 8, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | L5627 | 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 - Allergy/Immunology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 83 |
|---|---|
| Services billed | 2,373 across 22 procedure codes |
| Paid by Medicare | $26,030 |
Part D prescriptions in 2024
| Prescriptions (claims) | 887 · 1,440 30-day fills |
|---|---|
| Patients | 162 |
| Total drug cost | $1,501,927 |
| Generic share | 69% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Allergy/Immunology |
Medical group
- Southwest Asthma and Allergy AssociatesPearland, TX · 9 clinicians
Industry payments (Open Payments)
- 2025$8,184 · 184 payments from 25 companies
- 2024$19,639 · 152 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $2,743 | 41 |
| Genzyme Corporation | $2,316 | 22 |
| Glaxosmithkline, LLC. | $663.90 | 30 |
| Organon LLC | $402.08 | 8 |
| Novartis Pharmaceuticals Corporation | $297.94 | 13 |
What the 2025 payments were for
- Food and Beverage$4,621 · 179 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$2,100 · 3 payments
- Consulting Fee$1,446 · 1 payment
- Education$17.71 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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