KARIM HAJJAR
NPI 1700371812
Emergency Medicine in Baltimore, MD
About Karim Hajjar NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KARIM HAJJAR (NPI 1700371812) is an individual emergency medicine provider in Baltimore, Maryland, licensed in Maryland (D0093519) and active in the NPI registry since June 2018. He is enrolled in Medicare PECOS, is affiliated with University Of Md Capital Region Medical Center, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Karim Hajjar is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Karim Hajjar reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Laurel, MD 20707
- Reassigned Medicare billing, District of Columbia enrollment
- Medicare enrollment name: Emergency Medicine Associates P.A., P.C.
- 1,150 clinicians in this Medicare group
Rockville, MD 20850
- Reassigned Medicare billing, Maryland enrollment
- 301 clinicians in this Medicare group
Cumberland, MD 21502
- Reassigned Medicare billing, Maryland enrollment
- 96 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of MD Capital Region Medical Center
Acute Care Hospitals · Upper Marlboro, MDInova Fairfax Hospital
Acute Care Hospitals · Falls Church, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21223 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.
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 Karim Hajjar's NPI number?
The NPI number for Karim Hajjar is 1700371812. It was assigned to this individual provider in the NPPES registry on June 30, 2018.
Where is Karim Hajjar located?
Karim Hajjar practices at 2000 W Baltimore St, Baltimore, MD 21223. The listed phone number is (410) 362-3000.
What is Karim Hajjar's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Karim Hajjar enrolled in Medicare?
Yes. Karim Hajjar is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Karim Hajjar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karim Hajjar reassigns Medicare benefits to 3 organizations: Emergency Medicine Associates, PA (Laurel, MD), Mep Health, LLC (Rockville, MD) and Mep Observation Services LLC (Cumberland, MD). 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 Karim Hajjar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Karim Hajjar affiliated with any hospitals?
According to CMS data, Karim Hajjar is affiliated with University Of MD Capital Region Medical Center and Inova Fairfax Hospital.
When was this NPI record last updated?
The NPPES record for Karim Hajjar was last updated on August 8, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.
# Karim Hajjar · NPI 1700371812
Emergency Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since June 30, 2018.
## Identity
- **NPI:** 1700371812 (Entity type: Individual)
- **Enumerated:** June 30, 2018
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D0093519 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2000 W BALTIMORE ST, Baltimore, MD 21223-1558
- **Phone:** (410) 362-3000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Emergency Medicine Associates, PA (NPI 1831940881, Laurel, MD); Mep Health, LLC (NPI 1164483558, Rockville, MD); Mep Observation Services LLC (NPI 1093003550, Cumberland, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** August 8, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1700371812) · Data from the CMS NPPES public registry.