UMMARAH JAFFAR MD
NPI 1992455653
Internal Medicine in Mchenry, IL
About Ummarah Jaffar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
UMMARAH JAFFAR MD (NPI 1992455653) is an individual internal medicine provider in Mchenry, Illinois, licensed in Illinois (125079891) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses 3
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
Ummarah Jaffar 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 Reassignment
Medicare enrollment records show Ummarah Jaffar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 4,817 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Medicine Mchenry
Acute Care Hospitals · Mchenry, ILNorthwestern Lake Forest Hospital
Acute Care Hospitals · Lake Forest, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60050 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.
MCHENRY, IL 60050
MCHENRY, IL 60050
MCHENRY, IL 60050
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 Ummarah Jaffar's NPI number?
The NPI number for Ummarah Jaffar is 1992455653. It was assigned to this individual provider in the NPPES registry on March 25, 2022.
Where is Ummarah Jaffar located?
Ummarah Jaffar practices at 4201 W Medical Center Dr, Mchenry, IL 60050. The listed phone number is (814) 344-5000.
What is Ummarah Jaffar's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ummarah Jaffar enrolled in Medicare?
Yes. Ummarah Jaffar 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 organization bills Medicare for Ummarah Jaffar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ummarah Jaffar reassigns Medicare benefits to Northwestern Medical Faculty Foundation (Carol Stream, IL). The 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 Ummarah Jaffar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ummarah Jaffar affiliated with any hospitals?
According to CMS data, Ummarah Jaffar is affiliated with Northwestern Medicine Mchenry and Northwestern Lake Forest Hospital.
When was this NPI record last updated?
The NPPES record for Ummarah Jaffar was last updated on July 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Ummarah Jaffar, MD · NPI 1992455653
Internal Medicine physician in Mchenry, Illinois. Individual provider, active in the CMS NPPES registry since March 25, 2022.
## Identity
- **NPI:** 1992455653 (Entity type: Individual)
- **Enumerated:** March 25, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 125079891 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 4201 W MEDICAL CENTER DR, Mchenry, IL 60050-8409
- **Phone:** (814) 344-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Northwestern Medical Faculty Foundation (NPI 1346235314, Carol Stream, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** July 31, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1992455653) · Data from the CMS NPPES public registry.