MAZEN KHERALLAH MD
NPI 1922025691
Internal Medicine - Critical Care Medicine in Fargo, ND
About Mazen Kherallah Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAZEN KHERALLAH MD (NPI 1922025691) is an individual critical care medicine provider in Fargo, North Dakota, licensed in Illinois (036083445) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Insight Hospital And Medical Center Chicago, and is a graduate of Other (1987).
NPPES Registry Identity
Specialties & Licenses
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
Mazen Kherallah Md 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
6Medicare enrollment records show Mazen Kherallah reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fargo, ND 58102
- Reassigned Medicare billing, North Dakota enrollment
- 1,464 clinicians in this Medicare group
Bagley, MN 56621
- Reassigned Medicare billing, Minnesota enrollment
- 607 clinicians in this Medicare group
South Beloit, IL 61080
- Reassigned Medicare billing, Illinois enrollment
- 2,127 clinicians in this Medicare group
Aurora, IL 60504
- Reassigned Medicare billing, Illinois enrollment
- 96 clinicians in this Medicare group
Chicago, IL 60616
- Reassigned Medicare billing, Illinois enrollment
- 354 clinicians in this Medicare group
Joplin, MO 64804
- Reassigned Medicare billing, Missouri enrollment
- 9 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Insight Hospital And Medical Center Chicago
Acute Care Hospitals · Chicago, ILFranciscan Health Olympia & Chicago Heights
Acute Care Hospitals · Olympia Fields, ILSanford Bemidji Medical Center
Acute Care Hospitals · Bemidji, MNSanford Medical Center Fargo
Acute Care Hospitals · Fargo, NDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 58102 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 Mazen Kherallah's NPI number?
The NPI number for Mazen Kherallah is 1922025691. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Mazen Kherallah located?
Mazen Kherallah practices at 801 Broadway N, Fargo, ND 58102. The listed phone number is (701) 234-7200.
What is Mazen Kherallah's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Mazen Kherallah enrolled in Medicare?
Yes. Mazen Kherallah 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 Mazen Kherallah's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mazen Kherallah reassigns Medicare benefits to 6 organizations: Sanford Medical Center Fargo (Fargo, ND), Sanford Health Of Northern Minnesota (Bagley, MN), The Board Of Trustees Of The University Of Illinois (South Beloit, IL), Critical Care Physicians Of Illinois LLC (Aurora, IL), Insight Chicago, Inc. (Chicago, IL) and 1 more organization, listed in the Medicare section above. 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 Mazen Kherallah's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mazen Kherallah accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Blue Cross Blue Shield of North Dakota and Sanford Health Plan list Mazen Kherallah 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 Mazen Kherallah affiliated with any hospitals?
According to CMS data, Mazen Kherallah is affiliated with Insight Hospital And Medical Center Chicago, Franciscan Health Olympia & Chicago Heights, Sanford Bemidji Medical Center and Sanford Medical Center Fargo.
When was this NPI record last updated?
The NPPES record for Mazen Kherallah was last updated on October 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.
# Mazen Kherallah, MD · NPI 1922025691
Critical Care Medicine physician in Fargo, North Dakota. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1922025691 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 036083445 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 801 BROADWAY N, Fargo, ND 58102-3641
- **Phone:** (701) 234-7200 · **Fax:** (701) 234-7225
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Sanford Medical Center Fargo (NPI 1952323974, Fargo, ND); Sanford Health Of Northern Minnesota (NPI 1972875490, Bagley, MN); The Board Of Trustees Of The University Of Illinois (NPI 1871905190, South Beloit, IL); Critical Care Physicians Of Illinois LLC (NPI 1508134966, Aurora, IL); Insight Chicago, Inc. (NPI 1881261006, Chicago, IL); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1987
## Record status
- **NPPES last updated:** October 19, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1922025691) · Data from the CMS NPPES public registry.