GRETNA MEDICAL CENTER
NPI 1831417153
Internal Medicine in Gretna, LA

Q: What is Hai Nam Nguyen, MD LLC's NPI number?

The NPI number for Hai Nam Nguyen, MD LLC is 1831417153. It was assigned to this organization in the NPPES registry on May 11, 2010. The provider is doing business as Gretna Medical Center.

Q: What is Hai Nam Nguyen, MD LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since May 11, 2010

1221 AMELIA ST, GRETNA, LA 70053(504) 364-1844(504) 367-6022 Get Directions Write a Review

NPPES record last updated: April 11, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Gretna Medical Center NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GRETNA MEDICAL CENTER (NPI 1831417153) is a healthcare organization registered as an internal medicine in Gretna, Louisiana and active in the NPI registry since May 2010. The organization lists Hai Nam Nguyen, Medical Director, as its authorized official.

NPPES Registry Identity

NPI1831417153

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameHAI NAM NGUYEN, MD LLC

Location Address1221 AMELIA STGretna, LA 70053-5533

Mailing Address1221 Amelia StGretna, LA 70053-5533 · (504) 364-1844 · Fax (504) 367-6022

Phone(504) 364-1844

Fax(504) 367-6022

Organization SubpartNo

Authorized OfficialHai Nam NguyenMedical Director · (504) 364-1844

Enumeration DateMay 11, 2010

Last NPPES UpdateApril 11, 2014

✔ NPI 1831417153 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in LA · 023174

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedFamily MedicineTaxonomy 207Q00000X · License 06349R (LA)

Also ListedPediatricsTaxonomy 208000000X · License 023174 (LA)

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License AP04172 (LA)

1221 AMELIA ST, Gretna, LA 70053

Open in Google Maps ↗

Other Names 1

Doing Business AsGretna Medical Center

Other Identifiers 1

Medicare UPINH18613

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gretna Medical Center is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 3 clinicians reassign Medicare billing to Gretna Medical Center, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 3 within 10 miles. They are listed nearest first.

Clinicians, nearest first (3)

Hai Nguyen, M.D.

Internal Medicine

NPI 1235295551

315 WESTBANK EXPY
Gretna, LA 70053

(504) 364-1844

✔ PECOS✔ Accepts MedicareSame address

Brad Bourgeois

Nurse Practitioner

NPI 1982066783

315 WESTBANK EXPY
Gretna, LA 70053

(504) 364-1844

✔ PECOS✔ Accepts Medicare0.1 mi

Karla Castillo, APRN

Nurse Practitioner

NPI 1144109976

3205 ORLEANS AVE
New Orleans, LA 70119

(878) 868-5351

✔ PECOS4.8 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Hai Nam Nguyen, MD LLC's NPI number?

The NPI number for Hai Nam Nguyen, MD LLC is 1831417153. It was assigned to this organization in the NPPES registry on May 11, 2010. The provider is doing business as Gretna Medical Center.

Where is Hai Nam Nguyen, MD LLC located?

Hai Nam Nguyen, MD LLC is located at 1221 Amelia St, Gretna, LA 70053. The listed phone number is (504) 364-1844.

What is Hai Nam Nguyen, MD LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Hai Nam Nguyen, MD LLC enrolled in Medicare?

Yes. Hai Nam Nguyen, MD LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Hai Nam Nguyen, MD LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Hai Nam Nguyen, MD LLC, in Internal Medicine and Nurse Practitioner. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 1 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Hai Nam Nguyen, MD LLC was last updated on April 11, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.