MARIEM ALI SADEK SAWAN MBBS
NPI 1821442344
Internal Medicine - Cardiovascular Disease in Baltimore, MD
About Mariem Ali Sadek Sawan Mbbs NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIEM ALI SADEK SAWAN MBBS (NPI 1821442344) is an individual cardiovascular disease provider in Baltimore, Maryland, licensed in Georgia (85287) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with Duke University Hospital, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mariem Ali Sadek Sawan Mbbs 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.
Medicare Billing Reassignments
5Medicare enrollment records show Mariem Sawan reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Henderson, NC 27536
- Reassigned Medicare billing, North Carolina enrollment
- 178 clinicians in this Medicare group
Durham, NC 27704
- Reassigned Medicare billing, North Carolina enrollment
- Also billed through NPI 1497912232 (North Carolina)
- 1,482 clinicians in this Medicare group
Durham, NC 27704
- Reassigned Medicare billing, North Carolina enrollment
- 3,671 clinicians in this Medicare group
Atlanta, GA 30322
- Reassigned Medicare billing, Georgia enrollment
- 4,840 clinicians in this Medicare group
Atlanta, GA 30303
- Reassigned Medicare billing, Georgia enrollment
- 2,681 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Duke University Hospital
Acute Care Hospitals · Durham, NCMaria Parham Medical Center
Acute Care Hospitals · Henderson, NCDuke Regional Hospital
Acute Care Hospitals · Durham, NCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BALTIMORE, MD 21201
BALTIMORE, MD 21201
BALTIMORE, MD 21201
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 Mariem Sawan's NPI number?
The NPI number for Mariem Sawan is 1821442344. It was assigned to this individual provider in the NPPES registry on April 21, 2016.
Where is Mariem Sawan located?
Mariem Sawan practices at 22 S Greene St Room N3e09, Baltimore, MD 21201. The listed phone number is (410) 328-6110.
What is Mariem Sawan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Mariem Sawan enrolled in Medicare?
Yes. Mariem Sawan 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.
Which organizations bill Medicare for Mariem Sawan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariem Sawan reassigns Medicare benefits to 5 organizations: Dlp Maria Parham Physician Practices LLC (Henderson, NC), Duke University Health System, Inc. (Durham, NC), Duke Health Integrated Practice, Inc (Durham, NC), The Emory Clinic Inc (Atlanta, GA) and Emory Medical Care Foundation Inc (Atlanta, GA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mariem Sawan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mariem Sawan accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 4 other insurers list Mariem Sawan 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 Mariem Sawan affiliated with any hospitals?
According to CMS data, Mariem Sawan is affiliated with Duke University Hospital, Maria Parham Medical Center and Duke Regional Hospital.
When was this NPI record last updated?
The NPPES record for Mariem Sawan was last updated on September 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.
# Mariem Ali Sadek Sawan, MBBS · NPI 1821442344
Cardiovascular Disease physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 21, 2016.
## Identity
- **NPI:** 1821442344 (Entity type: Individual)
- **Enumerated:** April 21, 2016
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 85287 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 22 S GREENE ST, ROOM N3E09, Baltimore, MD 21201-1544
- **Phone:** (410) 328-6110
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Dlp Maria Parham Physician Practices LLC (NPI 1578256749, Henderson, NC); Duke University Health System, Inc. (NPI 1962721308, Durham, NC); Duke Health Integrated Practice, Inc (NPI 1518725936, Durham, NC); The Emory Clinic Inc (NPI 1396798229, Atlanta, GA); Emory Medical Care Foundation Inc (NPI 1063452381, Atlanta, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** September 3, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1821442344) · Data from the CMS NPPES public registry.