Henneth Antonieta Corado Montenegro, M.D.
NPI 1104159011ActiveIndividual· Internal Medicine· McAllen, TX
Internal Medicine (M.D.) with Gastroenterology Consultants of South Texas, PLLC, practicing in McAllen, Texas. Their prescriptions cost Medicare Part D more than their services did: $65,093 for 103 claims, against $5,080 paid for services in 2024. Lilly USA, LLC was the largest of 6 companies reporting payments in 2025, $159.04 in all, mostly food and beverage.
Overview
| NPI | 1104159011 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 9, 2009 |
| Last updated in NPPES | Jan 15, 2026 |
| Certified by provider | Jan 15, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | R1939 | 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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 50 |
|---|---|
| Services billed | 94 across 9 procedure codes |
| Paid by Medicare | $5,080 |
Part D prescriptions in 2024
| Prescriptions (claims) | 103 · 137 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $65,093 |
| Generic share | 46% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Gastroenterology Consultants of South Texas, PLLCHarlingen, TX · 42 clinicians
Industry payments (Open Payments)
- 2025$159.04 · 8 payments from 6 companies
- 2024$300.27 · 17 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $34.84 | 2 |
| Currax Pharmaceuticals LLC | $33.30 | 2 |
| Vertex Pharmaceuticals Incorporated | $32.93 | 1 |
| Novo Nordisk Inc | $21.60 | 1 |
| Ethicon US, LLC | $19.85 | 1 |
What the 2025 payments were for
- Food and Beverage$159.04 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 88 internal medicine physicians in McAllen · All internal medicine physicians in Texas