Adriana Castillo, M.D.
NPI 1639580392ActiveIndividual· Family Medicine· San Marcos, TX
Family Medicine (M.D.) with Privia Medical Group Gulf Coast PLLC, practicing in San Marcos, Texas. Their prescriptions cost Medicare Part D more than their services did: $571,774 for 5,063 claims, against $77,415 paid for services in 2024. Bolton Medical Inc was the largest of 7 companies reporting payments in 2025, $336.50 in all, mostly food and beverage. Lists Christus Santa Rosa Hospital-San Marcos as a hospital affiliation.
Overview
| NPI | 1639580392 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 15, 2014 |
| Last updated in NPPES | Dec 10, 2021 |
| Certified by provider | Dec 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | R0371 | TX |
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 - Family Practice (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 208 |
|---|---|
| Services billed | 2,422 across 54 procedure codes |
| Paid by Medicare | $77,415 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,063 · 13,085 30-day fills |
|---|---|
| Patients | 537 |
| Total drug cost | $571,774 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Privia Medical Group Gulf Coast PLLCPearland, TX · 534 clinicians
Hospital affiliation
- Christus Santa Rosa Hospital-San MarcosSan Marcos, TX
Other facilities
- Pam Health at HomeHome health agency · Buda, TX
Industry payments (Open Payments)
- 2025$336.50 · 8 payments from 7 companies
- 2024$482.96 · 20 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bolton Medical Inc | $144.90 | 2 |
| Inspire Medical Systems, Inc. | $106.22 | 1 |
| Lilly USA, LLC | $20.84 | 1 |
| Astrazeneca Pharmaceuticals LP | $18.18 | 1 |
| Abbott Laboratories | $16.48 | 1 |
What the 2025 payments were for
- Food and Beverage$336.50 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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