Alexander Lu Nguyen, MD
NPI 1528001930ActiveIndividual· Internal Medicine· Houston, TX
Internal Medicine (MD) in Houston, Texas, trained at University of Texas Medical School at Houston (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $277,742 for 2,074 claims, against $58,483 paid for services in 2024. Dexcom, Inc. was the largest of 7 companies reporting payments in 2025, $137.31 in all, mostly food and beverage.
Overview
| NPI | 1528001930 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 14, 2006 |
| Last updated in NPPES | Dec 11, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | K2762 | 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 | 93 |
|---|---|
| Services billed | 1,892 across 69 procedure codes |
| Paid by Medicare | $58,483 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,074 · 5,663 30-day fills |
|---|---|
| Patients | 172 |
| Total drug cost | $277,742 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
Medical group
- David P Ellent PLLCSpring, TX · 58 clinicians
Hospital affiliations
- Memorial Hermann Hospital SystemHouston, TX
- Providence Little Company of Mary Med Ctr TorranceTorrance, CA
Industry payments (Open Payments)
- 2025$137.31 · 8 payments from 7 companies
- 2024$84.39 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dexcom, Inc. | $40.66 | 2 |
| Seqirus USA Inc | $22.02 | 1 |
| Corcept Therapeutics | $20.28 | 1 |
| Exact Sciences Corporation | $17.54 | 1 |
| Lilly USA, LLC | $15.71 | 1 |
What the 2025 payments were for
- Food and Beverage$137.31 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 1,983 internal medicine physicians in Houston · All internal medicine physicians in Texas