Javier Fernando Dieguez, M.D.
NPI 1497061527ActiveIndividual· Internal Medicine, Pulmonary Disease· Amarillo, TX
Internal Medicine, Pulmonary Disease (M.D.) with Bsa Physicians Group Inc and 3 other groups, practicing in Amarillo, Texas. Their prescriptions cost Medicare Part D more than their services did: $1,360,947 for 2,721 claims, against $152,994 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 18 companies reporting payments in 2025, $1,610 in all, mostly food and beverage. Lists Bsa Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1497061527 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 26, 2010 |
| Last updated in NPPES | May 15, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | Q5175 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pulmonary Disease (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 826 |
|---|---|
| Services billed | 3,478 across 47 procedure codes |
| Paid by Medicare | $152,994 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,721 · 3,268 30-day fills |
|---|---|
| Patients | 409 |
| Total drug cost | $1,360,947 |
| Generic share | 26% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Pulmonary Disease |
Medical groups
- Bsa Physicians Group IncAmarillo, TX · 122 clinicians
- Bsa Amarillo Diagnostic Clinic IncAmarillo, TX · 30 clinicians
- Bsa Hospital LLCAmarillo, TX · 21 clinicians
- Amarillo Lung and Critical Care PLLCAmarillo, TX · 3 clinicians
Hospital affiliations
- Bsa HospitalAmarillo, TX
- Northwest Texas HospitalAmarillo, TX
- Quail Creek Surgical HospitalAmarillo, TX
Industry payments (Open Payments)
- 2025$1,610 · 85 payments from 18 companies
- 2024$1,113 · 57 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $417.49 | 24 |
| Astrazeneca Pharmaceuticals LP | $241.62 | 20 |
| Insmed, Inc. | $190.90 | 8 |
| Verona Pharma, Inc. | $100.74 | 5 |
| Grifols USA, LLC | $89.91 | 3 |
What the 2025 payments were for
- Food and Beverage$1,610 · 85 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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