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CENTER FOR INTERNAL MEDICINE INC.
NPI 1093952756
Clinic/Center - Primary Care in Oak Lawn, IL

Active since January 15, 2009CLIA 14D1094715 · Waiver
4609 W 103RD ST, OAK LAWN, IL 60453(708) 425-0070(708) 425-0304 Get Directions Write a Review

NPPES record last updated: March 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Center For Internal Medicine Inc. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CENTER FOR INTERNAL MEDICINE INC. (NPI 1093952756) is a healthcare organization registered as a primary care in Oak Lawn, Illinois and active in the NPI registry since January 2009. The organization holds a CLIA Waiver certificate valid through January 25, 2027 and lists Mariusz Wojciech Gadula, President, as its authorized official.

NPPES Registry Identity

NPI1093952756
Entity TypeOrganization
Primary Taxonomy261QP2300X
Legal Business NameCENTER FOR INTERNAL MEDICINE INC.
Location Address4609 W 103RD STOak Lawn, IL 60453-4718
Mailing Address4609 W 103rd StOak Lawn, IL 60453-4718 · (708) 425-0070 · Fax (708) 425-0304
Phone(708) 425-0070
Fax(708) 425-0304
Organization SubpartNo
Authorized OfficialMariusz Wojciech GadulaPresident · (708) 425-0070
Enumeration DateJanuary 15, 2009
Last NPPES UpdateMarch 12, 2025
NPPES CertifiedMarch 12, 2025
✔ NPI 1093952756 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinic/Center · Primary CareAmbulatory Health Care Facilities
Taxonomy Code261QP2300X
Also ListedInternal MedicineTaxonomy 207R00000X
4609 W 103RD ST, Oak Lawn, IL 60453
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Center For Internal Medicine Inc. 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 Center For Internal Medicine Inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Mariusz Gadula, MD
Internal Medicine
NPI 1548292832
4609 W 103RD ST
Oak Lawn, IL 60453
(708) 425-0070
✔ PECOS✔ Accepts MedicareSame address

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 14D1094715

Center For Internal Medicine · Oak Lawn, IL
Active · expires Jan 25, 2027
CLIA Number14D1094715
Laboratory TypePhysician Office
Certificate Effective DateJanuary 26, 2025
Certificate Expiration DateJanuary 25, 2027
Laboratory DirectorMariusz W. Gadula
Laboratory Phone(708) 425-0070
Laboratory LocationCenter For Internal Medicine4609 W 103rd Street, Oak Lawn, IL 60453
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Center For Internal Medicine Inc.'s NPI number?

The NPI number for Center For Internal Medicine Inc. is 1093952756. It was assigned to this organization in the NPPES registry on January 15, 2009.

Where is Center For Internal Medicine Inc. located?

Center For Internal Medicine Inc. is located at 4609 W 103rd St, Oak Lawn, IL 60453. The listed phone number is (708) 425-0070.

What is Center For Internal Medicine Inc.'s specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.

Is Center For Internal Medicine Inc. enrolled in Medicare?

Yes. Center For Internal Medicine Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Center For Internal Medicine Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Center For Internal Medicine Inc.. 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 Center For Internal Medicine Inc. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 14D1094715) is associated with this NPI, valid through January 25, 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 Center For Internal Medicine Inc. was last updated on March 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.