Quick answers
- Does Hai N. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Hai N. Nguyen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Hai N. Nguyen see?
- In 2024, CMS data shows 126 Original Medicare patients and 1,976 services for Hai N. Nguyen. This counts Original Medicare only and measures volume, not quality.
- What is Hai N. Nguyen's NPI number?
- 1235295551. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Hai N. Nguyen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 126 |
|---|---|
| Services billed to Medicare | 1,976 |
| Different services or procedures | 60 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)525 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)270 services
- Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)174 services
- Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)121 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)93 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes48%
- Arthritis24%
- Anxiety23%
- COPD21%
Practice locations
Addresses where Hai N. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 315 Westbank ExpyGretna, LA 70053 (504) 364‑1844
Group practices
Medicare enrollment lists Hai N. Nguyen as a member of this group (CMS data updated October 2, 2026).
- Hai Nam Nguyen MD LLC2 clinicians in the group
Specialties
- Internal Medicineprimary
- Pediatric Medicinealso
Other internal medicine doctors in Gretna
Clinicians with the same Medicare primary specialty in Gretna, LA — not a recommendation.
Other clinicians in Hai Nam Nguyen MD LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In New Orleans |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235295551 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians