KIDNEY SPECIALISTS OF ILLINOIS LLC
NPI 1275969222
Internal Medicine - Nephrology in Chicago, IL
About Kidney Specialists Of Illinois Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KIDNEY SPECIALISTS OF ILLINOIS LLC (NPI 1275969222) is a healthcare organization registered as a nephrology in Chicago, Illinois and active in the NPI registry since September 2013. The organization lists Mustafa Mohammed Ali, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Kidney Specialists Of Illinois Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
6Medicare enrollment records show 6 clinicians reassign Medicare billing to Kidney Specialists Of Illinois LLC, which bills Medicare for the services they deliver. Of these, 3 practice within 10 miles. They are listed nearest first.
Clinicians, nearest first (6)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Kidney Specialists Of Illinois LLC's NPI number?
The NPI number for Kidney Specialists Of Illinois LLC is 1275969222. It was assigned to this organization in the NPPES registry on September 23, 2013.
Where is Kidney Specialists Of Illinois LLC located?
Kidney Specialists Of Illinois LLC is located at 5140 N California Ave Suite 700, Chicago, IL 60625. The listed phone number is (773) 784-2101.
What is Kidney Specialists Of Illinois LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Kidney Specialists Of Illinois LLC enrolled in Medicare?
Yes. Kidney Specialists Of Illinois LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Kidney Specialists Of Illinois LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 4 Medicare specialties reassign their Medicare billing to Kidney Specialists Of Illinois LLC. A 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 the clinician's services. The largest specialties are Internal Medicine (3), Geriatric Medicine (1) and Nephrology (1). Of these, 3 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Kidney Specialists Of Illinois LLC accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Kidney Specialists Of Illinois LLC 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.
When was this NPI record last updated?
The NPPES record for Kidney Specialists Of Illinois LLC was last updated on February 3, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Kidney Specialists Of Illinois Llc · NPI 1275969222
Nephrology organization in Chicago, Illinois. Organization record, active in the CMS NPPES registry since September 23, 2013.
## Identity
- **NPI:** 1275969222 (Entity type: Organization)
- **Enumerated:** September 23, 2013
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **Organization subpart:** No
- **Authorized official:** Mustafa Ali, OWNER
## Practice location
- **Address:** 5140 N CALIFORNIA AVE, SUITE 700, Chicago, IL 60625-3645
- **Phone:** (773) 784-2101 · **Fax:** (773) 784-0771
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 6 clinicians in 4 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (3), Geriatric Medicine (1), Nephrology (1); 3 practice within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 3, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1275969222) · Data from the CMS NPPES public registry.