Juliann Garza Castillo, PH.D, PA-C
NPI 1396103909ActiveIndividual· Physician Assistant· McAllen, TX
Physician Assistant (PH.D, PA-C) with Jose E Igoa MD PA, practicing in McAllen, Texas. Their prescriptions cost Medicare Part D more than their services did: $116,567 for 922 claims, against $2,397 paid for services in 2024. Abbvie Inc. was the largest of 13 companies reporting payments in 2025, $1,904 in all, mostly food and beverage.
Overview
| NPI | 1396103909 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PH.D, PA-C |
| Sole proprietor | Yes |
| NPI issued | Feb 10, 2016 |
| Last updated in NPPES | Mar 20, 2024 |
| Certified by provider | Mar 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA03496 | 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 - Physician Assistant (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 23 |
|---|---|
| Services billed | 39 across 2 procedure codes |
| Paid by Medicare | $2,397 |
Part D prescriptions in 2024
| Prescriptions (claims) | 922 · 1,135 30-day fills |
|---|---|
| Patients | 134 |
| Total drug cost | $116,567 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Jose E Igoa MD PAMcAllen, TX · 5 clinicians
Industry payments (Open Payments)
- 2025$1,904 · 80 payments from 13 companies
- 2024$799.89 · 23 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $361.19 | 29 |
| Neurocrine Biosciences, Inc. | $305.02 | 9 |
| Alkermes, Inc. | $299.60 | 5 |
| E.R. Squibb & Sons, L.L.C. | $284.07 | 5 |
| Otsuka America Pharmaceutical, Inc. | $260.64 | 13 |
What the 2025 payments were for
- Food and Beverage$1,904 · 80 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 148 physician assistants in McAllen · All physician assistants in Texas