DR. GLENN P. ZEMEL M.D.
NPI 1104873124
Anesthesiology in Naperville, IL
About Dr. Glenn P. Zemel M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GLENN P. ZEMEL M.D. (NPI 1104873124) is an individual anesthesiology provider in Naperville, Illinois, licensed in Wisconsin (102117-875) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Delnor Community Hospital, and maintains a secondary practice location in Geneva.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
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. Glenn P. Zemel 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 Reassignments
2Medicare enrollment records show Glenn Zemel reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 4,817 clinicians in this Medicare group
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 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 4
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Medicine Delnor Community Hospital
Acute Care Hospitals · Geneva, ILFroedtert Memorial Lutheran Hospital
Acute Care Hospitals · Milwaukee, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NAPERVILLE, IL 60540
NAPERVILLE, IL 60540
NAPERVILLE, IL 60540
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 Glenn Zemel's NPI number?
The NPI number for Glenn Zemel is 1104873124. It was assigned to this individual provider in the NPPES registry on May 27, 2006.
Where is Glenn Zemel located?
Glenn Zemel practices at 801 S Washington St, Naperville, IL 60540. The listed phone number is (630) 355-0450.
What is Glenn Zemel's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Glenn Zemel enrolled in Medicare?
Yes. Glenn Zemel 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 Glenn Zemel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Glenn Zemel reassigns Medicare benefits to 2 organizations: Northwestern Medical Faculty Foundation (Carol Stream, IL) and The Medical College Of Wisconsin, Inc. (Milwaukee, WI). 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 Glenn Zemel's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Glenn Zemel affiliated with any hospitals?
According to CMS data, Glenn Zemel is affiliated with Northwestern Medicine Delnor Community Hospital and Froedtert Memorial Lutheran Hospital.
When was this NPI record last updated?
The NPPES record for Glenn Zemel was last updated on December 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.