Joanna Lizette Mendiola-Castaneda, PA-C
NPI 1942508312ActiveIndividual· Physician Assistant· Harlingen, TX
Physician Assistant (PA-C) with Wellmed Medical Group PA, practicing in Harlingen, Texas. Their prescriptions cost Medicare Part D more than their services did: $369,790 for 2,391 claims, against $1,972 paid for services in 2024. Dexcom, Inc. reported $18.01 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1942508312 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Mar 8, 2011 |
| Last updated in NPPES | Nov 16, 2023 |
| Certified by provider | Nov 16, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 | 16 |
|---|---|
| Services billed | 67 across 28 procedure codes |
| Paid by Medicare | $1,972 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,391 · 5,277 30-day fills |
|---|---|
| Patients | 527 |
| Total drug cost | $369,790 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Wellmed Medical Group PASan Antonio, TX · 646 clinicians
Industry payments (Open Payments)
- 2025$18.01 · 1 payment from 1 company
- 2024$22.02 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dexcom, Inc. | $18.01 | 1 |
What the 2025 payments were for
- Food and Beverage$18.01 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 66 physician assistants in Harlingen · All physician assistants in Texas