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NORTHWEST CHICAGO PRIMARY CARE SC
NPI 1962760017
Internal Medicine in Chicago, IL

Active since April 26, 2012CLIA Certified · 2 labs
5641 W IRVING PARK RD, CHICAGO, IL 60634(773) 635-5700(773) 635-5050 Get Directions Write a Review

NPPES record last updated: September 10, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Northwest Chicago Primary Care Sc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NORTHWEST CHICAGO PRIMARY CARE SC (NPI 1962760017) is a healthcare organization registered as an internal medicine in Chicago, Illinois and active in the NPI registry since April 2012. The organization holds 2 active CLIA laboratory certificates and lists Charlemagne G Guerrero, President, as its authorized official.

NPPES Registry Identity

NPI1962760017
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameNORTHWEST CHICAGO PRIMARY CARE SC
Location Address5641 W IRVING PARK RDChicago, IL 60634-2742
Mailing Address2900 N 76th CtElmwood Park, IL 60707-1101 · (773) 635-5700 · Fax (773) 635-5050
Phone(773) 635-5700
Fax(773) 635-5050
Organization SubpartNo
Authorized OfficialCharlemagne G GuerreroPresident · (773) 504-0727
Enumeration DateApril 26, 2012
Last NPPES UpdateSeptember 10, 2013
✔ NPI 1962760017 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036124775
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
5641 W IRVING PARK RD, Chicago, IL 60634
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Other Identifiers 2

Medicare PINIL7127IL
OtherDT5494IL · Railroad Medicare Ptan

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Northwest Chicago Primary Care Sc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Northwest Chicago Primary Care Sc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Charlemagne Guerrero, M.D.
Internal Medicine
NPI 1871715540
5641 W IRVING PARK RD
Chicago, IL 60634
(773) 635-5700
✔ PECOS✔ Accepts MedicareSame address

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 2

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 14D2091991

Northwest Chicago Primary Care Sc · Oak Park, IL
Active · expires Feb 23, 2027
CLIA Number14D2091991
Laboratory TypePhysician Office
Certificate Effective DateFebruary 24, 2025
Certificate Expiration DateFebruary 23, 2027
Laboratory DirectorCharlemagne G. Guerrero MD
Laboratory Phone(773) 635-5700
Laboratory LocationNorthwest Chicago Primary Care Sc1100 Lake St, Ste Ll21, Oak Park, IL 60301
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 14D2059574

Northwest Chicago Primary Care S C · Chicago, IL
Active · expires May 23, 2027
CLIA Number14D2059574
Laboratory TypePhysician Office
Certificate Effective DateMay 24, 2025
Certificate Expiration DateMay 23, 2027
Laboratory DirectorCharlemagne G. Guerrero M D
Laboratory Phone(773) 635-5700
Laboratory LocationNorthwest Chicago Primary Care S C5600 W Addison St, Suite 406, Chicago, IL 60634
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Northwest Chicago Primary Care Sc's NPI number?

The NPI number for Northwest Chicago Primary Care Sc is 1962760017. It was assigned to this organization in the NPPES registry on April 26, 2012.

Where is Northwest Chicago Primary Care Sc located?

Northwest Chicago Primary Care Sc is located at 5641 W Irving Park Rd, Chicago, IL 60634. The listed phone number is (773) 635-5700.

What is Northwest Chicago Primary Care Sc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Northwest Chicago Primary Care Sc enrolled in Medicare?

Yes. Northwest Chicago Primary Care Sc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Northwest Chicago Primary Care Sc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Northwest Chicago Primary Care 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Northwest Chicago Primary Care Sc hold CLIA laboratory certificates?

Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

When was this NPI record last updated?

The NPPES record for Northwest Chicago Primary Care Sc was last updated on September 10, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.