DR. RENAUD MARCEL GUERET M.D.
NPI 1245336262
Internal Medicine - Pulmonary Disease in Chicago, IL
About Dr. Renaud Marcel Gueret M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RENAUD MARCEL GUERET M.D. (NPI 1245336262) is an individual pulmonary disease provider in Chicago, Illinois, licensed in Illinois (036-111203) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with John H Stroger Jr Hospital, and is a graduate of Other (1996).
NPPES Registry Identity
Specialties & Licenses 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Renaud Marcel Gueret M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Renaud Gueret reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60615
- Reassigned Medicare billing, Illinois enrollment
- 1,047 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
John H Stroger Jr Hospital
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60615 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 11
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60615
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 Renaud Gueret's NPI number?
The NPI number for Renaud Gueret is 1245336262. It was assigned to this individual provider in the NPPES registry on September 16, 2006.
Where is Renaud Gueret located?
Renaud Gueret practices at 500 E 51st St, Chicago, IL 60615. The listed phone number is (312) 572-1200.
What is Renaud Gueret's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Renaud Gueret enrolled in Medicare?
Yes. Renaud Gueret is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Renaud Gueret's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Renaud Gueret reassigns Medicare benefits to Cook County (Chicago, IL). The 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 Renaud Gueret's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Renaud Gueret accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Renaud Gueret as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Renaud Gueret affiliated with any hospitals?
According to CMS data, Renaud Gueret is affiliated with John H Stroger Jr Hospital.
When was this NPI record last updated?
The NPPES record for Renaud Gueret was last updated on April 26, 2021. 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.
# Dr. Renaud Marcel Gueret, M.D. · NPI 1245336262
Pulmonary Disease physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since September 16, 2006.
## Identity
- **NPI:** 1245336262 (Entity type: Individual)
- **Enumerated:** September 16, 2006
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** 036-111203 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 500 E 51ST ST, Chicago, IL 60615-2400
- **Phone:** (312) 572-1200
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Cook County (NPI 1437279676, Chicago, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1996
## Record status
- **NPPES last updated:** April 26, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1245336262) · Data from the CMS NPPES public registry.