DR. MERRILL HARPE STEWART III M.D.
NPI 1679830111
Internal Medicine - Cardiovascular Disease in New Orleans, LA

Q: What is Merrill Stewart's NPI number?

The NPI number for Merrill Stewart is 1679830111. It was assigned to this individual provider in the NPPES registry on April 23, 2012.

Q: What is Merrill Stewart's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Merrill Stewart was last updated on August 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since April 23, 2012PECOS EnrolledAccepts Medicare Assignment

1514 JEFFERSON HIGHWAY, OCHSNER CLINIC FOUNDATION - CARDIOLOGY FELLOWSHIP PROGR, NEW ORLEANS, LA 70121(504) 842-0879(504) 842-3278 Get Directions Write a Review

NPPES record last updated: August 6, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 6, 2021, Jul 9, 2020, Aug 8, 2018 and 1 more (4 updates tracked since 2018).

On this page

About Dr. Merrill Harpe Stewart Iii M.d. NPPES

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

DR. MERRILL HARPE STEWART III M.D. (NPI 1679830111) is an individual cardiovascular disease provider in New Orleans, Louisiana, licensed in Louisiana (MD.207586) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS, is affiliated with Ochsner Medical Center Acute, and is a graduate of University Of Alabama School Of Medicine (2012).

NPPES Registry Identity

NPI1679830111

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. MERRILL HARPE STEWART IIICredential: M.D.

Location Address1514 JEFFERSON HIGHWAY, OCHSNER CLINIC FOUNDATION - CARDIOLOGY FELLOWSHIP PROGRNew Orleans, LA 70121

Mailing Address1514 Jefferson HwyNew Orleans, LA 70121-2429 · (504) 842-4000

Phone(504) 842-0879

Fax(504) 842-3278

Sole ProprietorNo

Medical School CMSUniversity Of Alabama School Of MedicineGraduated 2012

Enumeration DateApril 23, 2012

Last NPPES UpdateAugust 6, 20214 updates tracked since enumeration

NPPES CertifiedAugust 6, 2021

✔ NPI 1679830111 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in LA · MD.207586✔ Licensed in MS · 25729

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1514 JEFFERSON HIGHWAY, New Orleans, LA 70121

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Other Identifiers 1

Medicaid06950320MS

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Louisiana, CHRISTUS Health Plan, HMO Louisiana.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Merrill Harpe Stewart Iii M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9133435423

PECOS Enrollment IDI20180822001041

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 17

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

229 services224 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

160 services156 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

76 services75 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

76 services75 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

65 services32 patients

Nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan 78431

This is a diagnostic test where a tiny amount of radioactive material is used to examine your heart's blood flow at rest & during stress, alongside a CT scan for detailed images. It helps identify any heart-related issues like blockages or damage.

57 services56 patients

Nuclear medicine study of heart muscle blood flow by pet 78434

A nuclear medicine study of heart muscle blood flow by PET is a non-invasive test that uses a small amount of radioactive substance to create detailed images of your heart's blood flow and function. It helps assess heart health and diagnose heart conditions.

53 services53 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

51 services49 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

41 services24 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

27 services27 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

23 services23 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

23 services23 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

22 services22 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

17 services17 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

17 services17 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

17 services17 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

13 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ochsner Medical Center Acute

Acute Care Hospitals · New Orleans, LA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number190036

Location1516 Jefferson HwyNew Orleans, LA 70121 · Jefferson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 70121 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$128.88 typical visit price

range $55.50 – $170.30

Typical copayment $32.22 (range $13.87 – $42.57)

Most-billed visit code 99204

Established Patient

$69.44 typical visit price

range $17.42 – $138.03

Typical copayment $17.36 (range $4.35 – $34.50)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MICHAEL CHRISTOPHER KNISLEY M.D.

Emergency Medicine

1514 JEFFERSON HIGHWAY
NEW ORLEANS, LA 70121

Jefferson Parish (504) 842-3460

DAVID S BRUCE M.

Transplant Surgery

1514 JEFFERSON HIGHWAY
NEW ORLEANS, LA 70121

Jefferson Parish (504) 842-4000

JAMES R HANLEY III MD

Emergency Medicine (Pediatric Emergency Medicine)

1514 JEFFERSON HIGHWAY
NEW ORLEANS, LA 70121

Jefferson Parish (504) 842-4000

DR. DAVID S KIRSCH MD

Radiology (Vascular & Interventional Radiology)

1514 JEFFERSON HIGHWAY
NEW ORLEANS, LA 70121

Jefferson Parish (504) 842-4000

DR. KACEY CHRISTOPHER WUERTZ DNP, AGACNP-BC

Nurse Practitioner (Acute Care)

1514 JEFFERSON HIGHWAY, SURGICAL INTENSIVE CARE 10TH FLOOR WEST TOWER
NEW ORLEANS, LA 70121

Jefferson Parish (504) 842-3000

DR. TREVOR WILLIAM REICHMAN MD, PHD

Transplant Surgery

1514 JEFFERSON HIGHWAY
NEW ORLEANS, LA 70121

Jefferson Parish (504) 842-3925

DR. IVORY CRITTENDON III MD

Pediatrics (Pediatric Cardiology)

1514 JEFFERSON HIGHWAY
NEW ORLEANS, LA 70121

Jefferson Parish (504) 842-5200

DR. MATTHEW EDWARD PATTERSON M.D.

Anesthesiology

1514 JEFFERSON HIGHWAY
NEW ORLEANS, LA 70121

Jefferson Parish (504) 842-3755

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 Merrill Stewart's NPI number?

The NPI number for Merrill Stewart is 1679830111. It was assigned to this individual provider in the NPPES registry on April 23, 2012.

Where is Merrill Stewart located?

Merrill Stewart practices at 1514 Jefferson Highway Ochsner Clinic Foundation - Cardiology Fellowship Progr, New Orleans, LA 70121. The listed phone number is (504) 842-0879.

What is Merrill Stewart's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Merrill Stewart enrolled in Medicare?

Yes. Merrill Stewart is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Merrill Stewart accept?

Health plans from Blue Cross and Blue Shield of Louisiana, CHRISTUS Health Plan and HMO Louisiana list Merrill Stewart as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Merrill Stewart affiliated with any hospitals?

According to CMS data, Merrill Stewart is affiliated with Ochsner Medical Center Acute.

When was this NPI record last updated?

The NPPES record for Merrill Stewart was last updated on August 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.