Mary Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Mary 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.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)101 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)53 services
3. Needle measurement of electrical activity in arm or leg muscles, complete study (95886)45 services
4. Nerve conduction, 9-10 studies (95911)38 services
5. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)13 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 cholesterol70%
• Arthritis45%
• Anxiety35%
• Depression33%
• Diabetes30%

Hospitals where Mary Nguyen works

Medicare's Facility Affiliation Data lists Mary Nguyen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Ochsner Medical Center AcuteNew Orleans, LA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 190036
• Ochsner Medical Center-KennerKenner, LA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 190274

Practice locations

Addresses where Mary Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).

• 120 Ochsner BlvdGretna, LA 70056 (504) 366‑5032

Group practices

Medicare enrollment lists Mary Nguyen as a member of this group (CMS data updated October 2, 2026).

• Ochsner Clinic LLC2,864 clinicians in the group

Specialties

• Neurologyprimary

Find other Neurology doctors in Louisiana →

Other neurologists in Gretna

Clinicians with the same Medicare primary specialty in Gretna, LA — not a recommendation.

• Steven T. Atkins, MD
• Dhanpat C. Mohnot, MD
• Cornel Rogers, MD

All neurologists in Gretna →

Other clinicians in Ochsner Clinic LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Chequita S. Williams, MD
• Austin C. Thomas, MD
• John A. Kalmar, MD
• Mark Brien, PA
• John M. Brown, MD
• Natasha Schlumbrecht, NP

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians