MERAJ AZIZ MD
NPI 1689134017
Internal Medicine - Medical Oncology in Rockford, IL
About Meraj Aziz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MERAJ AZIZ MD (NPI 1689134017) is an individual medical oncology provider in Rockford, Illinois, licensed in Illinois (036175638) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Osf Saint Elizabeth Mdl Ctr, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 4
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
Meraj Aziz 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
2Medicare enrollment records show Meraj Aziz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rockford, IL 61108
- Reassigned Medicare billing, Illinois enrollment
- 67 clinicians in this Medicare group
Peoria, IL 61615
- Reassigned Medicare billing, Illinois enrollment
- 2,944 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Osf Saint Elizabeth Mdl Ctr
Acute Care Hospitals · Ottawa, ILSaint Anthony Medical Center
Acute Care Hospitals · Rockford, ILOsf Saint Paul Medical Center
Critical Access Hospitals · Mendota, ILOsf Saint Clare Medical Center
Critical Access Hospitals · Princeton, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 61108 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 Meraj Aziz's NPI number?
The NPI number for Meraj Aziz is 1689134017. It was assigned to this individual provider in the NPPES registry on March 21, 2019.
Where is Meraj Aziz located?
Meraj Aziz practices at 5666 E State St, Rockford, IL 61108. The listed phone number is (615) 327-6611.
What is Meraj Aziz's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Meraj Aziz enrolled in Medicare?
Yes. Meraj Aziz 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 Meraj Aziz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Meraj Aziz reassigns Medicare benefits to 2 organizations: Saint Anthony Medical Center (Rockford, IL) and Osf Multi-Specialty Group (Peoria, IL). 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 Meraj Aziz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Meraj Aziz affiliated with any hospitals?
According to CMS data, Meraj Aziz is affiliated with Osf Saint Elizabeth Mdl Ctr, Saint Anthony Medical Center, Osf Saint Paul Medical Center and Osf Saint Clare Medical Center.
When was this NPI record last updated?
The NPPES record for Meraj Aziz was last updated on April 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Meraj Aziz, MD · NPI 1689134017
Medical Oncology physician in Rockford, Illinois. Individual provider, active in the CMS NPPES registry since March 21, 2019.
## Identity
- **NPI:** 1689134017 (Entity type: Individual)
- **Enumerated:** March 21, 2019
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** 036175638 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 5666 E STATE ST, Rockford, IL 61108-2425
- **Phone:** (615) 327-6611
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Saint Anthony Medical Center (NPI 1790739977, Rockford, IL); Osf Multi-Specialty Group (NPI 1154908929, Peoria, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** April 28, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1689134017) · Data from the CMS NPPES public registry.