OAK BROOK MEDICAL GROUP LTD
NPI 1366941510
General Practice in Oak Brook, IL
About Oak Brook Medical Group Ltd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
OAK BROOK MEDICAL GROUP LTD (NPI 1366941510) is a healthcare organization registered as a general practice in Oak Brook, Illinois and active in the NPI registry since February 2018. The organization lists Barry Wolf, Billing Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Oak Brook Medical Group Ltd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by February 28, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
5Medicare enrollment records show 5 clinicians reassign Medicare billing to Oak Brook Medical Group Ltd, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 5 within 10 miles. They are listed nearest first.
Clinicians, nearest first (5)
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 Oak Brook Medical Group Ltd's NPI number?
The NPI number for Oak Brook Medical Group Ltd is 1366941510. It was assigned to this organization in the NPPES registry on February 2, 2018.
Where is Oak Brook Medical Group Ltd located?
Oak Brook Medical Group Ltd is located at 2603 W 22nd St Ste 22, Oak Brook, IL 60523. The listed phone number is (630) 317-7478.
What is Oak Brook Medical Group Ltd's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Oak Brook Medical Group Ltd enrolled in Medicare?
Yes. Oak Brook Medical Group Ltd is registered in the Medicare PECOS enrollment system.
When is Oak Brook Medical Group Ltd's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare DME enrollment for this organization (Illinois, Physician - General Practice) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Oak Brook Medical Group Ltd?
According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 3 Medicare specialties reassign their Medicare billing to Oak Brook Medical Group Ltd. 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 Chiropractic (3), Interventional Pain Management (1) and Nurse Practitioner (1). Of these, 2 practice at this address and 5 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Oak Brook Medical Group Ltd was last updated on November 30, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Oak Brook Medical Group Ltd · NPI 1366941510
General Practice organization in Oak Brook, Illinois. Organization record, active in the CMS NPPES registry since February 2, 2018.
## Identity
- **NPI:** 1366941510 (Entity type: Organization)
- **Enumerated:** February 2, 2018
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **Organization subpart:** No
- **Authorized official:** Barry Wolf, BILLING MANAGER
## Practice location
- **Address:** 2603 W 22ND ST STE 22, Oak Brook, IL 60523-4637
- **Phone:** (630) 317-7478 · **Fax:** (630) 317-7504
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** February 28, 2027 (DME, Illinois, Physician - General Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 5 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Chiropractic (3), Interventional Pain Management (1), Nurse Practitioner (1); 2 practice at this address and 5 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 30, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1366941510) · Data from the CMS NPPES public registry.