Marnin Merrick, MD
NPI 1114132818 · Hematology & Oncology Physician · New Orleans, LA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marnin Merrick, MD is a Hematology & Oncology Physician provider in New Orleans, LA (NPI 1114132818).
Provider details
- NPI number
- 1114132818
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 41160 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
569 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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 336 | $43 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 66 | $183 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 58 | $93 |
| Calculation of Radiation Therapy Dose77300 | 35 | $31 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 32 | $135 |
| Design and Construction of Complex Radiation Treatment Device77334 | 30 | $58 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,537 across 8 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
Additional practice locations (2)
- 831 S BroadwayMinot, ND 58701-4636Phone: (701) 418-8000
- 2305 37th Ave SwMinot, ND 58701-7669Phone: (701) 418-8000
Registry dates
- Enumerated
- 2007-05-14
- Last updated
- 2025-04-28
- Certified
- 2025-04-28
Frequently asked questions
- What is Marnin Merrick's NPI number?
- Marnin Merrick's National Provider Identifier (NPI) is 1114132818, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marnin Merrick's specialty?
- Marnin Merrick is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Marnin Merrick located?
- Marnin Merrick's practice location on file with NPPES is 1430 Tulane Ave, New Orleans, LA 70112-2632.
- What is Marnin Merrick's phone number?
- The practice phone number listed in the NPPES registry for Marnin Merrick is (504) 988-6060.
- Does Marnin Merrick accept Medicare?
- Marnin Merrick is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marnin Merrick's NPI active?
- Yes — Marnin Merrick's NPI (1114132818) is active in the NPPES registry as of the last update on 2025-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.