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Internal Medicine Providers in Marrero, LA

Browse 46 Internal Medicine providers listed in NPPES with a practice address in Marrero, Louisiana.

46 Healthcare Providers

How Marrero compares with the U.S.

Marrero has 141 clinicians in Internal Medicine per 100,000 residents, 3.2 times the U.S. rate of 44.

That is 46 active clinicians in Internal Medicine with a practice address in Marrero, for a population of 32,540.

The Louisiana rate is 38 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

98% of clinicians in Internal Medicine in Marrero listed in the CMS Medicare file (39 of 40) accept Medicare assignment. That is similar to the Louisiana share of 97%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

28% of clinicians in Internal Medicine in Marrero listed in the CMS Medicare file (11 of 40) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Louisiana share of 22%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Marrero, LA

Source: CMS PECOS
PECOS Enrolled Specialists 41 In Marrero, LA
Part B Lab & Imaging Eligible 43 Diagnostic Referrals
DME Ordering Eligible 43 Durable Medical Equipment
Home Health Agency Referrals 43 HHA Ordering Eligible
Showing 1โ€“20 of 46 providers
With recent CMS data first, then Aโ€“Z

Dr. Scott J. Acosta , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1111 Medical Center Blvd., Ste. S850, Marrero, LA 700723147
Phone: 5043496450
NPI Identifier 1023018199
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Dr. Hernan Adames , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1101 Medical Center Blvd, Marrero, LA 700723147
Phone: 5043491656
NPI Identifier 1053567016
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Dr. Nathan Aleger , MD

Internal Medicine

Active NPI Status
1101 Medical Center Blvd, Marrero, LA 700723147
Phone: 5043491656
NPI Identifier 1417652546
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Dr. Christopher M Argote , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1101 Medical Center Blvd., Hospitalist Group, Marrero, LA 700723147
Phone: 5043491656
NPI Identifier 1902030497
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Dr. Lauren P. Barial , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1101 Medical Center Blvd., Hospitalist Department, Marrero, LA 70072
Phone: 5043491656
NPI Identifier 1699758821
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Dr. Walter Michael Bortz , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1101 Medical Center Blvd, Marrero, LA 700723147
Phone: 5043491656
NPI Identifier 1225012016
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Dr. Alan J Bowers , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1111 Medical Center Blvd, Suite S850, Marrero, LA 700723151
Phone: 5043496450
NPI Identifier 1306832886
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Dr. Maggie Butler , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1101 Medical Center Blvd, Marrero, LA 70072
Phone: 5043491297
NPI Identifier 1134514177
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Dr. Cory Lyle Cashman , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1111 Medical Center Blvd, Ste N411, Marrero, LA 700723187
Phone: 5043285703
NPI Identifier 1194739326
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Dr. Marvin P Dair , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4225 Lapalco Blvd, Marrero, LA 700724324
Phone: 5043719355
NPI Identifier 1427085893
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Dr. Christie Violetta Degrange , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4225 Lapalco Blvd, Marrero, LA 70072
Phone: 5043719355
NPI Identifier 1881779403
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Dr. Craig Ehrensing , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
4225 Lapalco Blvd, Marrero, LA 700724338
Phone: 5043719355
NPI Identifier 1538127618
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Dr. Marie Yolene Fervil , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1101 Medical Center Blvd., Hospitalist Department, Marrero, LA 70072
Phone: 5043491656
NPI Identifier 1518076439
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Dr. Joy Fesen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1101 Medical Center Blvd, Marrero, LA 700723147
Phone: 5043491656
NPI Identifier 1770162224
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Dr. Amanda G. Fontenot , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
4225 Lapaleo Boulevard, Marrero, LA 70072
Phone: 5043719355
NPI Identifier 1356531131
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Dr. Bonnie D Gasquet-Johnson , MD

Internal Medicine

Active NPI Status
1101 Medical Center Blvd., Hospitalist Department, Marrero, LA 700723147
Phone: 5043491656
NPI Identifier 1346475100
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Dr. Andrea D. Germond , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1101 Medicare Ctr. Blvd., Hospitalist Department, Marrero, LA 70072
Phone: 5043491656
NPI Identifier 1659696912
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Dr. Constance M Gistand , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1101 Medical Center Blvd, Attn: Medical Staff Office, Marrero, LA 700723147
Phone: 5043491119
NPI Identifier 1225014327
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Dr. Alan Bernard Halle , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1111 Medical Center Blvd Ste S850, Marrero, LA 70072
Phone: 5043496450
NPI Identifier 1740345008
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Dr. Phillip Holly , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
4837 Lapalco Blvd, Marrero, LA 700724325
Phone: 5047033260
NPI Identifier 1700402583
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Frequently Asked Questions about Internal Medicine in Marrero

How do I check a Internal Medicine practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Louisiana licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.