Adam Noel Casillas, PA-C
NPI 1083918346ActiveIndividual· Physician Assistant· San Antonio, TX
Physician Assistant (PA-C) with University of Texas Health Science Center at San Antonio and 2 other groups, practicing in San Antonio, Texas. Their prescriptions cost Medicare Part D more than their services did: $77,106 for 365 claims, against $11,871 paid for services in 2024. Abbvie Inc. was the largest of 8 companies reporting payments in 2025, $377.29 in all, mostly food and beverage. Lists Ut Health San Antonio Multispecialty & Research Ho as a hospital affiliation.
Overview
| NPI | 1083918346 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Dec 30, 2010 |
| Last updated in NPPES | Jan 25, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 79 |
|---|---|
| Services billed | 6,532 across 30 procedure codes |
| Paid by Medicare | $11,871 |
Part D prescriptions in 2024
| Prescriptions (claims) | 365 · 744 30-day fills |
|---|---|
| Patients | 94 |
| Total drug cost | $77,106 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical groups
- University of Texas Health Science Center at San AntonioSan Antonio, TX · 1,297 clinicians
- Total MD Physicians Group, PLLCAustin, TX · 129 clinicians
- Transitional Care Physicians PLLCSan Antonio, TX · 43 clinicians
Hospital affiliation
- Ut Health San Antonio Multispecialty & Research HoSan Antonio, TX
Industry payments (Open Payments)
- 2025$377.29 · 23 payments from 8 companies
- 2024$600.29 · 28 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $171.40 | 11 |
| Amgen Inc. | $63.37 | 3 |
| Viiv Healthcare Company | $47.93 | 2 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $32.67 | 2 |
| Abbott Laboratories | $18.03 | 1 |
What the 2025 payments were for
- Food and Beverage$377.29 · 23 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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