Billy A. De Los Santos, MD
NPI 1386885614ActiveIndividual· Internal Medicine· Sunnyvale, TX
Internal Medicine (MD) with Wellmed Medical Group PA and 1 other group, practicing in Sunnyvale, Texas. Their prescriptions cost Medicare Part D more than their services did: $1,272,473 for 8,387 claims, against $11,973 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. reported $66.85 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1386885614 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 17, 2009 |
| Last updated in NPPES | Jun 9, 2021 |
| Certified by provider | Jun 9, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | P0899 | TX |
| Internal Medicine | 207R00000X | 262040 | NY |
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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 55 |
|---|---|
| Services billed | 210 across 16 procedure codes |
| Paid by Medicare | $11,973 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,387 · 23,187 30-day fills |
|---|---|
| Patients | 799 |
| Total drug cost | $1,272,473 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Wellmed Medical Group PASan Antonio, TX · 646 clinicians
- Medical Clinic of North Texas, PLLCFort Worth, TX · 267 clinicians
Industry payments (Open Payments)
- 2025$66.85 · 4 payments from 1 company
- 2024$85.13 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $66.85 | 4 |
What the 2025 payments were for
- Food and Beverage$66.85 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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