GREGORY KACZMAREK, MD, LLC
NPI 1780925305
Internal Medicine in Skokie, IL
About Gregory Kaczmarek, Md, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY KACZMAREK, MD, LLC (NPI 1780925305) is a healthcare organization registered as an internal medicine in Skokie, Illinois and active in the NPI registry since March 2013. The organization lists Gregory D Kaczmarek, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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)
Gregory Kaczmarek, Md, Llc 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 Gregory Kaczmarek, MD, LLC, 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.
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 Gregory Kaczmarek, MD, LLC's NPI number?
The NPI number for Gregory Kaczmarek, MD, LLC is 1780925305. It was assigned to this organization in the NPPES registry on March 6, 2013.
Where is Gregory Kaczmarek, MD, LLC located?
Gregory Kaczmarek, MD, LLC is located at 4905 Old Orchard Ctr Lower Level, Skokie, IL 60077. The listed phone number is (847) 679-6707.
What is Gregory Kaczmarek, MD, LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Gregory Kaczmarek, MD, LLC enrolled in Medicare?
Yes. Gregory Kaczmarek, MD, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Gregory Kaczmarek, MD, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Gregory Kaczmarek, MD, LLC. 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.
When was this NPI record last updated?
The NPPES record for Gregory Kaczmarek, MD, LLC was last updated on March 6, 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.
# Gregory Kaczmarek, Md, Llc · NPI 1780925305
Internal Medicine organization in Skokie, Illinois. Organization record, active in the CMS NPPES registry since March 6, 2013.
## Identity
- **NPI:** 1780925305 (Entity type: Organization)
- **Enumerated:** March 6, 2013
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Gregory Kaczmarek, PRESIDENT
## Practice location
- **Address:** 4905 OLD ORCHARD CTR, LOWER LEVEL, Skokie, IL 60077-1458
- **Phone:** (847) 679-6707
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Internal Medicine) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 6, 2013
- **Other identifiers:** Medicare UPIN 943230 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1780925305) · Data from the CMS NPPES public registry.