RUSH OAK PARK PHYSICIANS GROUP LAKE STREET
NPI 1841531456
Internal Medicine in Oak Park, IL
About Rush Oak Park Physicians Group Lake Street NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUSH OAK PARK PHYSICIANS GROUP LAKE STREET (NPI 1841531456) is a healthcare organization registered as an internal medicine in Oak Park, Illinois and active in the NPI registry since March 2013. The organization holds a CLIA Waiver certificate valid through June 6, 2027 and lists Scott A Halper, Authorized Official, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 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)
Rush Oak Park Physicians Group Lake Street is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
7Medicare enrollment records show 7 clinicians reassign Medicare billing to Rush Oak Park Physicians Group Lake Street, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 7 within 10 miles. They are listed nearest first.
Clinicians, nearest first (7)
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 14D2060213
Rush Oak Park Physicians Group Lake Street · 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 Rush Oak Park Physicians Group Lake Street's NPI number?
The NPI number for Rush Oak Park Physicians Group Lake Street is 1841531456. It was assigned to this organization in the NPPES registry on March 6, 2013.
Where is Rush Oak Park Physicians Group Lake Street located?
Rush Oak Park Physicians Group Lake Street is located at 1011 Lake St Suite 300, Oak Park, IL 60301. The listed phone number is (708) 628-0600.
What is Rush Oak Park Physicians Group Lake Street's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Rush Oak Park Physicians Group Lake Street enrolled in Medicare?
Yes. Rush Oak Park Physicians Group Lake Street is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Rush Oak Park Physicians Group Lake Street?
According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 3 Medicare specialties reassign their Medicare billing to Rush Oak Park Physicians Group Lake Street. 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 Internal Medicine (3), Family Practice (2) and Nurse Practitioner (2). Of these, 2 practice at this address and 7 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Rush Oak Park Physicians Group Lake Street hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 14D2060213) is associated with this NPI, valid through June 6, 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 Rush Oak Park Physicians Group Lake Street was last updated on September 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Rush Oak Park Physicians Group Lake Street · NPI 1841531456
Internal Medicine organization in Oak Park, Illinois. Organization record, active in the CMS NPPES registry since March 6, 2013.
## Identity
- **NPI:** 1841531456 (Entity type: Organization)
- **Enumerated:** March 6, 2013
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** Yes (part of Rush Medical Group)
- **Authorized official:** Scott Halper, AUTHORIZED OFFICIAL
## Practice location
- **Address:** 1011 LAKE ST, SUITE 300, Oak Park, IL 60301-1148
- **Phone:** (708) 628-0600
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 7 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (3), Family Practice (2), Nurse Practitioner (2); 2 practice at this address and 7 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 26, 2024
- **CLIA laboratory certificates:** 1 on file
---
Source: [NPI Profile](https://npiprofile.com/npi/1841531456) · Data from the CMS NPPES public registry.