CIMPAR, S.C.
NPI 1467496224
Internal Medicine in Oak Park, IL
About Cimpar, S.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CIMPAR, S.C. (NPI 1467496224) is a healthcare organization registered as an internal medicine in Oak Park, Illinois and active in the NPI registry since June 2006. The organization holds a CLIA Waiver certificate valid through January 26, 2028 and lists Dheeraj Mahajan, President, 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)
Cimpar, S.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
70Medicare enrollment records show 70 clinicians reassign Medicare billing to Cimpar, S.C., which bills Medicare for the services they deliver. Of these, 21 practice at this address and 43 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 7
Nearest to this location (20)
See all 70Source: 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 14D2016872
Cimpar Sc - Oak Park · Oak Park, 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 Cimpar, S.C.'s NPI number?
The NPI number for Cimpar, S.C. is 1467496224. It was assigned to this organization in the NPPES registry on June 15, 2006.
Where is Cimpar, S.C. located?
Cimpar, S.C. is located at 101 Madison St Ste 300, Oak Park, IL 60302. The listed phone number is (708) 486-2700.
What is Cimpar, S.C.'s specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Cimpar, S.C. enrolled in Medicare?
Yes. Cimpar, S.C. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Cimpar, S.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 70 clinicians in 7 Medicare specialties reassign their Medicare billing to Cimpar, S.C.. 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 (32), Internal Medicine (23) and Hospitalist (11). Of these, 21 practice at this address and 43 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Cimpar, S.C. hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 14D2016872) is associated with this NPI, valid through January 26, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Cimpar, S.C. accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Cimpar, S.C. 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 Cimpar, S.C. was last updated on August 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 57 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.
# Cimpar, S.c. · NPI 1467496224
Internal Medicine organization in Oak Park, Illinois. Organization record, active in the CMS NPPES registry since June 15, 2006.
## Identity
- **NPI:** 1467496224 (Entity type: Organization)
- **Enumerated:** June 15, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Dheeraj Mahajan, PRESIDENT
## Practice location
- **Address:** 101 MADISON ST STE 300, Oak Park, IL 60302-4210
- **Phone:** (708) 486-2700 · **Fax:** (708) 486-2702
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 70 clinicians in 7 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (32), Internal Medicine (23), Hospitalist (11); 21 practice at this address and 43 within 10 miles; [full list](https://npiprofile.com/npi/1467496224/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 26, 2026
- **CLIA laboratory certificates:** 1 on file
---
Source: [NPI Profile](https://npiprofile.com/npi/1467496224) · Data from the CMS NPPES public registry.