Ruth Carolina Serrano Pinilla, MD
NPI 1285073122ActiveIndividual· Internal Medicine, Infectious Disease· San Antonio, TX
Internal Medicine, Infectious Disease (MD) with University of Texas Health Science Center at San Antonio, practicing in San Antonio, Texas. Their prescriptions cost Medicare Part D more than their services did: $106,235 for 169 claims, against $11,529 paid for services in 2024. Gilead Sciences, Inc. was the largest of 2 companies reporting payments in 2025, $254.70 in all, mostly food and beverage. Lists University Health System as a hospital affiliation.
Overview
| NPI | 1285073122 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 24, 2013 |
| Last updated in NPPES | Jan 20, 2026 |
| Certified by provider | Jan 20, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | R7596 | TX |
| Internal Medicine | 207R00000X | R7596 | 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 - Infectious Disease (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 58 |
|---|---|
| Services billed | 155 across 13 procedure codes |
| Paid by Medicare | $11,529 |
Part D prescriptions in 2024
| Prescriptions (claims) | 169 · 201 30-day fills |
|---|---|
| Patients | 38 |
| Total drug cost | $106,235 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
Medical group
- University of Texas Health Science Center at San AntonioSan Antonio, TX · 1,297 clinicians
Hospital affiliation
- University Health SystemSan Antonio, TX
Industry payments (Open Payments)
- 2025$254.70 · 6 payments from 2 companies
- 2024$69.16 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $240.75 | 5 |
| Viiv Healthcare Company | $13.95 | 1 |
What the 2025 payments were for
- Food and Beverage$254.70 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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