Mariem Sawan, MBBS
NPI 1821442344 · Cardiovascular Disease Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariem Sawan, MBBS is a Cardiovascular Disease Physician provider in Baltimore, MD (NPI 1821442344).
Provider details
- NPI number
- 1821442344
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MBBS
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
10 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$83,052 across 36 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
- 2016-04-21
- Last updated
- 2025-09-03
- Certified
- 2025-09-03
Frequently asked questions
- What is Mariem Sawan's NPI number?
- Mariem Sawan's National Provider Identifier (NPI) is 1821442344, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariem Sawan's specialty?
- Mariem Sawan is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mariem Sawan located?
- Mariem Sawan's practice location on file with NPPES is 22 S Greene St, Baltimore, MD 21201-1544.
- What is Mariem Sawan's phone number?
- The practice phone number listed in the NPPES registry for Mariem Sawan is (410) 328-6110.
- Does Mariem Sawan accept Medicare?
- Mariem Sawan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariem Sawan's NPI active?
- Yes — Mariem Sawan's NPI (1821442344) is active in the NPPES registry as of the last update on 2025-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.