NORTHWESTERN CARDIOLOGY & INTERNAL MEDICINE SC
NPI 1275749582
Internal Medicine - Cardiovascular Disease in Chicago, IL
About Northwestern Cardiology & Internal Medicine Sc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NORTHWESTERN CARDIOLOGY & INTERNAL MEDICINE SC (NPI 1275749582) is a healthcare organization registered as a cardiovascular disease in Chicago, Illinois and active in the NPI registry since May 2007. The organization holds a CLIA Microscopy certificate valid through March 26, 2027 and lists Stuart Greenfield, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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)
Northwestern Cardiology & Internal Medicine 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 Northwestern Cardiology & Internal Medicine Sc, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 for Provider-Performed Microscopy Procedures (PPMP) 14D0878952
Northwestern Cardiology & Internal Medicine Sc · Chicago, 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 Northwestern Cardiology & Internal Medicine Sc's NPI number?
The NPI number for Northwestern Cardiology & Internal Medicine Sc is 1275749582. It was assigned to this organization in the NPPES registry on May 15, 2007.
Where is Northwestern Cardiology & Internal Medicine Sc located?
Northwestern Cardiology & Internal Medicine Sc is located at 150 E Huron St Suite 800, Chicago, IL 60611. The listed phone number is (312) 642-9858.
What is Northwestern Cardiology & Internal Medicine Sc's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Northwestern Cardiology & Internal Medicine Sc enrolled in Medicare?
Yes. Northwestern Cardiology & Internal Medicine Sc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Northwestern Cardiology & Internal Medicine Sc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Cardiovascular Disease (Cardiology)) reassigns their Medicare billing to Northwestern Cardiology & Internal Medicine 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 Northwestern Cardiology & Internal Medicine Sc hold a CLIA laboratory certificate?
Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 14D0878952) is associated with this NPI, valid through March 26, 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 Northwestern Cardiology & Internal Medicine Sc was last updated on March 10, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Northwestern Cardiology & Internal Medicine Sc · NPI 1275749582
Cardiovascular Disease organization in Chicago, Illinois. Organization record, active in the CMS NPPES registry since May 15, 2007.
## Identity
- **NPI:** 1275749582 (Entity type: Organization)
- **Enumerated:** May 15, 2007
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **Organization subpart:** No
- **Authorized official:** Stuart Greenfield, PRESIDENT
## Practice location
- **Address:** 150 E HURON ST, SUITE 800, Chicago, IL 60611-2999
- **Phone:** (312) 642-9858 · **Fax:** (312) 642-9818
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Cardiovascular Disease (Cardiology)) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 10, 2016
- **Other identifiers:** Medicare UPIN G02413 (IL); Medicare ID-Type Unspecified K18365 (IL); Medicaid 036086081 (IL)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1275749582) · Data from the CMS NPPES public registry.