Merrill Stewart, M.D.
NPI 1679830111 · Cardiovascular Disease Physician · New Orleans, LA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Merrill Stewart, M.D. is a Cardiovascular Disease Physician provider in New Orleans, LA (NPI 1679830111).
Provider details
- NPI number
- 1679830111
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25729 (MS)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
967 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 229 | $65 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 160 | $8 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 76 | $20 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Review By Physician93018 | 76 | $13 |
| Critical Care, First 30-74 Minutes99291 | 65 | $206 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 224 | 74 |
| Metoprolol Succinate | 220 | 68 |
| Apixabanbrand: Eliquis | 195 | 38 |
| Atorvastatin Calcium | 192 | 75 |
| Sacubitril/Valsartanbrand: Entresto | 147 | 26 |
| Evolocumabbrand: Repatha Sureclick | 137 | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$735 across 19 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-04-23
- Last updated
- 2021-08-06
- Certified
- 2021-08-06
Frequently asked questions
- What is Merrill Stewart's NPI number?
- Merrill Stewart's National Provider Identifier (NPI) is 1679830111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Merrill Stewart's specialty?
- Merrill Stewart is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Merrill Stewart located?
- Merrill Stewart's practice location on file with NPPES is 1514 Jefferson Highway, New Orleans, LA 70121.
- What is Merrill Stewart's phone number?
- The practice phone number listed in the NPPES registry for Merrill Stewart is (504) 842-0879.
- Does Merrill Stewart accept Medicare?
- Merrill Stewart is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Merrill Stewart's NPI active?
- Yes — Merrill Stewart's NPI (1679830111) is active in the NPPES registry as of the last update on 2021-08-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.