DIANE ZIMMER
NPI 1588801732
Nurse Practitioner - Family in Oak Lawn, IL
About Diane Zimmer NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANE ZIMMER (NPI 1588801732) is an individual family provider in Oak Lawn, Illinois, licensed in Illinois (209007358) and active in the NPI registry since January 2009. She is enrolled in Medicare PECOS, is affiliated with The University Of Chicago Medical Center, and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
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
Diane Zimmer 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 Reassignments
6Medicare enrollment records show Diane Zimmer reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- 4,870 clinicians in this Medicare group
Chicago, IL 60629
- Reassigned Medicare billing, Illinois enrollment
- 39 clinicians in this Medicare group
Chicago, IL 60620
- Reassigned Medicare billing, Illinois enrollment
- 132 clinicians in this Medicare group
Chicago, IL 60615
- Reassigned Medicare billing, Illinois enrollment
- 45 clinicians in this Medicare group
Mokena, IL 60448
- Reassigned Medicare billing, Illinois enrollment
- 223 clinicians in this Medicare group
Dallas, TX 75244
- Reassigned Medicare billing, Illinois enrollment
- 712 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
The University Of Chicago Medical Center
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60453 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Diane Zimmer's NPI number?
The NPI number for Diane Zimmer is 1588801732. It was assigned to this individual provider in the NPPES registry on January 9, 2009.
Where is Diane Zimmer located?
Diane Zimmer practices at 9940 Harnew Road East, Oak Lawn, IL 60453. The listed phone number is (708) 738-9732.
What is Diane Zimmer's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Diane Zimmer enrolled in Medicare?
Yes. Diane Zimmer 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 organizations bill Medicare for Diane Zimmer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diane Zimmer reassigns Medicare benefits to 6 organizations: Advocate Health And Hospitals Corporation (Oak Lawn, IL), Alivio Medical Center, Inc. (Chicago, IL), Friend Family Health Center Inc (Chicago, IL), Near North Health Service Corporation (Chicago, IL), Minuteclinic Diagnostic Of Illinois PLLC (Mokena, IL) and 1 more organization, listed in the Medicare section above. Each 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 Diane Zimmer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diane Zimmer accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Diane Zimmer 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 Diane Zimmer affiliated with any hospitals?
According to CMS data, Diane Zimmer is affiliated with The University Of Chicago Medical Center.
When was this NPI record last updated?
The NPPES record for Diane Zimmer was last updated on June 30, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Diane Zimmer · NPI 1588801732
Family physician in Oak Lawn, Illinois. Individual provider, active in the CMS NPPES registry since January 9, 2009.
## Identity
- **NPI:** 1588801732 (Entity type: Individual)
- **Enumerated:** January 9, 2009
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 209007358 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 9940 HARNEW ROAD EAST, Oak Lawn, IL 60453
- **Phone:** (708) 738-9732
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Advocate Health And Hospitals Corporation (NPI 1174747075, Oak Lawn, IL); Alivio Medical Center, Inc. (NPI 1831770825, Chicago, IL); Friend Family Health Center Inc (NPI 1477175305, Chicago, IL); Near North Health Service Corporation (NPI 1922237890, Chicago, IL); Minuteclinic Diagnostic Of Illinois PLLC (NPI 1356485809, Mokena, IL); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** June 30, 2009
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Source: [NPI Profile](https://npiprofile.com/npi/1588801732) · Data from the CMS NPPES public registry.