KARIM S YUNEZ MD SC
NPI 1831238476
Internal Medicine in Lombard, IL
About Karim S Yunez Md Sc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KARIM S YUNEZ MD SC (NPI 1831238476) is a healthcare organization registered as an internal medicine in Lombard, Illinois and active in the NPI registry since February 2007. The organization holds a CLIA Waiver certificate valid through January 28, 2027 and lists Karim S. Yunez, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Karim S Yunez Md Sc 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 Karim S Yunez MD Sc, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 6 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.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 14D1064054
Karim S Yunez M D S C · Lombard, ILFrequently 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 S Yunez MD Sc's NPI number?
The NPI number for Karim S Yunez MD Sc is 1831238476. It was assigned to this organization in the NPPES registry on February 6, 2007.
Where is Karim S Yunez MD Sc located?
Karim S Yunez MD Sc is located at 130 S Main St Suite 203, Lombard, IL 60148. The listed phone number is (630) 627-3700.
What is Karim S Yunez MD Sc's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Karim S Yunez MD Sc enrolled in Medicare?
Yes. Karim S Yunez MD Sc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Karim S Yunez MD Sc?
According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 3 Medicare specialties reassign their Medicare billing to Karim S Yunez MD Sc. 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 Nurse Practitioner (3), Internal Medicine (2) and Hospitalist (1). Of these, 2 practice at this address and 6 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Karim S Yunez MD Sc hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 14D1064054) is associated with this NPI, valid through January 28, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Karim S Yunez MD Sc was last updated on July 29, 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.
# Karim S Yunez Md Sc · NPI 1831238476
Internal Medicine organization in Lombard, Illinois. Organization record, active in the CMS NPPES registry since February 6, 2007.
## Identity
- **NPI:** 1831238476 (Entity type: Organization)
- **Enumerated:** February 6, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Karim Yunez, PRESIDENT
## Practice location
- **Address:** 130 S MAIN ST, SUITE 203, Lombard, IL 60148-2670
- **Phone:** (630) 627-3700 · **Fax:** (630) 627-3711
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 6 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (3), Internal Medicine (2), Hospitalist (1); 2 practice at this address and 6 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 29, 2025
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1831238476) · Data from the CMS NPPES public registry.