Hai Nam Nguyen, M.D.
NPI 1235295551ActiveIndividual· Internal Medicine· Gretna, LA
Internal Medicine (M.D.) in Gretna, Louisiana, trained at Louisiana State University School of Medicine in New Orleans (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $1,014,069 for 6,818 claims, against $62,090 paid for services in 2024. Corcept Therapeutics was the largest of 9 companies reporting payments in 2025, $299.28 in all, mostly food and beverage.
Overview
| NPI | 1235295551 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 29, 2006 |
| Last updated in NPPES | Jun 15, 2023 |
| Certified by provider | Jun 15, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 023174 | LA |
| Pediatrics | 208000000X | 023174 | LA |
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 (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 126 |
|---|---|
| Services billed | 1,976 across 60 procedure codes |
| Paid by Medicare | $62,090 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,818 · 13,175 30-day fills |
|---|---|
| Patients | 354 |
| Total drug cost | $1,014,069 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in New Orleans |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
Medical group
- Hai Nam Nguyen MD LLCGretna, LA · 2 clinicians
Industry payments (Open Payments)
- 2025$299.28 · 16 payments from 9 companies
- 2024$531.26 · 33 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $56.44 | 3 |
| Abbvie Inc. | $56.41 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $48.96 | 3 |
| Cipher Pharmaceuticals US LLC | $42.67 | 2 |
| Astrazeneca Pharmaceuticals LP | $33.41 | 2 |
What the 2025 payments were for
- Food and Beverage$299.28 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 27 internal medicine physicians in Gretna · All internal medicine physicians in Louisiana