OSF HEALTHCARE SYSTEM
NPI 1215572045
General Acute Care Hospital in Evergreen Park, IL
About Osf Healthcare System NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OSF HEALTHCARE SYSTEM (NPI 1215572045), doing business as Osf Little Company Of Mary Medical Center, is a healthcare organization registered as a general acute care hospital in Evergreen Park, Illinois and active in the NPI registry since November 2019. The organization lists Kirsten Marie Largent, Cfo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 4
Other Names 2
Other Identifiers 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)
Osf Healthcare System is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
182Medicare enrollment records show 182 clinicians reassign Medicare billing to Osf Healthcare System, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 28 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 23
Nearest to this location (20)
See all 182Evergreen Park, IL 60805
Chicago, IL 60637
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 Osf Healthcare System's NPI number?
The NPI number for Osf Healthcare System is 1215572045. It was assigned to this organization in the NPPES registry on November 15, 2019. The provider is doing business as OSF Little Company of Mary Medical Center. The provider is also known as OSF HealthCare Little Company of Mary Medical Center.
Where is Osf Healthcare System located?
Osf Healthcare System is located at 2800 W 95th St, Evergreen Park, IL 60805. The listed phone number is (708) 422-6200.
What is Osf Healthcare System's specialty?
The primary specialty registered for this NPI is General Acute Care Hospital with taxonomy code 282N00000X.
Is Osf Healthcare System enrolled in Medicare?
Yes. Osf Healthcare System is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Osf Healthcare System?
According to the CMS Revalidation Reassignment List (October 2026 release), 182 clinicians in 23 Medicare specialties reassign their Medicare billing to Osf Healthcare System. 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 (39), Emergency Medicine (27) and Obstetrics/Gynecology (17). Of these, 3 practice at this address and 28 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Osf Healthcare System accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Osf Healthcare System 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 Osf Healthcare System was last updated on April 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Osf Healthcare System · NPI 1215572045
General Acute Care Hospital organization in Evergreen Park, Illinois. Organization record, active in the CMS NPPES registry since November 15, 2019.
## Identity
- **NPI:** 1215572045 (Entity type: Organization)
- **Enumerated:** November 15, 2019
- **Primary specialty:** General Acute Care Hospital · taxonomy 282N00000X
- **Also known as:** OSF Little Company of Mary Medical Center (Doing Business As); OSF HealthCare Little Company of Mary Medical Center (Other Name)
- **Organization subpart:** No
- **Authorized official:** Kirsten Largent, CFO
## Practice location
- **Address:** 2800 W 95TH ST, Evergreen Park, IL 60805-2701
- **Phone:** (708) 422-6200
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 182 clinicians in 23 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (39), Emergency Medicine (27), Obstetrics/Gynecology (17); 3 practice at this address and 28 within 10 miles; [full list](https://npiprofile.com/npi/1215572045/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 10, 2026
- **Other identifiers:** Medicaid 027 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1215572045) · Data from the CMS NPPES public registry.