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L ROBERT WARREN MD LLC
NPI 1144424847
Family Medicine in Belvidere, IL

Active since June 14, 2007
205 CADILLAC CT STE 6, BELVIDERE, IL 61008(815) 544-0444(815) 544-0652 Get Directions Write a Review

NPPES record last updated: March 8, 2012. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About L Robert Warren Md Llc NPPES

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

L ROBERT WARREN MD LLC (NPI 1144424847) is a healthcare organization registered as a family medicine in Belvidere, Illinois and active in the NPI registry since June 2007. The organization lists L Robert Warren, Pres, as its authorized official.

NPPES Registry Identity

NPI1144424847
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameL ROBERT WARREN MD LLC
Location Address205 CADILLAC CT STE 6Belvidere, IL 61008-1733
Mailing Address205 Cadillac Ct Ste 6Belvidere, IL 61008-1733 · (815) 544-0444 · Fax (815) 544-0652
Phone(815) 544-0444
Fax(815) 544-0652
Organization SubpartNo
Authorized OfficialL Robert WarrenPres · (815) 544-0444
Enumeration DateJune 14, 2007
Last NPPES UpdateMarch 8, 2012
✔ NPI 1144424847 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
205 CADILLAC CT STE 6, Belvidere, IL 61008
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Other Identifiers 1

Medicare ID-Type Unspecified209525

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)

L Robert Warren 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 L Robert Warren MD LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

L Warren, MD
Family Practice
NPI 1558341933
205 CADILLAC CT
Belvidere, IL 61008
(815) 544-0444
✔ 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.

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 L Robert Warren MD LLC's NPI number?

The NPI number for L Robert Warren MD LLC is 1144424847. It was assigned to this organization in the NPPES registry on June 14, 2007.

Where is L Robert Warren MD LLC located?

L Robert Warren MD LLC is located at 205 Cadillac Ct Ste 6, Belvidere, IL 61008. The listed phone number is (815) 544-0444.

What is L Robert Warren MD LLC's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is L Robert Warren MD LLC enrolled in Medicare?

Yes. L Robert Warren MD LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through L Robert Warren MD LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to L Robert Warren 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 L Robert Warren MD LLC was last updated on March 8, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.