Mariana Zapata, MD
NPI 1821528076 · Hepatology Physician · New Orleans, LA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariana Zapata, MD is a Hepatology Physician provider in New Orleans, LA (NPI 1821528076).
Provider details
- NPI number
- 1821528076
- Entity type
- Individual
- Primary specialty
- Hepatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 271942 (MA)
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
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
256 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 70 | $92 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 40 | $62 |
| Measurement of Liver Stiffness91200 | 33 | $10 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 31 | $167 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 24 | $114 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Spironolactone | 77 | 25 |
| Ursodiol | 56 | 12 |
| Furosemide | 52 | 19 |
| Tacrolimus | 41 | — |
| Rifaximinbrand: Xifaxan | 27 | — |
| Lactulose | 24 | — |
| Carvedilol | 22 | — |
| Azathioprine | 18 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$120 across 2 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 (1)
- Massachusetts General Hospital55 Fruit St.Boston, MA 02114Phone: (617) 643-0596
Registry dates
- Enumerated
- 2017-06-19
- Last updated
- 2023-09-01
- Certified
- 2023-09-01
Frequently asked questions
- What is Mariana Zapata's NPI number?
- Mariana Zapata's National Provider Identifier (NPI) is 1821528076, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariana Zapata's specialty?
- Mariana Zapata is listed in the NPPES registry with a primary specialty of Hepatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mariana Zapata located?
- Mariana Zapata's practice location on file with NPPES is 1514 Jefferson Hwy, New Orleans, LA 70121-2429.
- What is Mariana Zapata's phone number?
- The practice phone number listed in the NPPES registry for Mariana Zapata is (504) 842-5790.
- Does Mariana Zapata accept Medicare?
- Mariana Zapata is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariana Zapata's NPI active?
- Yes — Mariana Zapata's NPI (1821528076) is active in the NPPES registry as of the last update on 2023-09-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.