Monica Lisa Saenz-Castillo, PA-C
NPI 1619990967ActiveIndividual· Physician Assistant, Medical· Raymondville, TX
Physician Assistant, Medical (PA-C) with Donna Medical Clinic, PLLC, practicing in Raymondville, Texas. Their prescriptions cost Medicare Part D more than their services did: $841,198 for 5,285 claims, against $3,525 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 12 companies reporting payments in 2025, $670.57 in all, mostly food and beverage. Lists Vhs Harlingen Hospital Company LLC as a hospital affiliation.
Overview
| NPI | 1619990967 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jul 26, 2006 |
| Last updated in NPPES | Apr 9, 2024 |
| Certified by provider | Apr 9, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | PA04040 | 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 | 32 |
|---|---|
| Services billed | 162 across 29 procedure codes |
| Paid by Medicare | $3,525 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,285 · 9,728 30-day fills |
|---|---|
| Patients | 565 |
| Total drug cost | $841,198 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Donna Medical Clinic, PLLCDonna, TX · 35 clinicians
Hospital affiliation
- Vhs Harlingen Hospital Company LLCHarlingen, TX
Industry payments (Open Payments)
- 2025$670.57 · 43 payments from 12 companies
- 2024$770.66 · 53 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $208.98 | 11 |
| Amgen Inc. | $193.10 | 15 |
| Novo Nordisk Inc | $66.90 | 4 |
| Ani Pharmaceuticals, Inc. | $35.39 | 2 |
| Exact Sciences Corporation | $34.12 | 2 |
What the 2025 payments were for
- Food and Beverage$670.57 · 43 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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