ROBERT W THUMME DO
NPI 1275558660
Emergency Medicine in Zion, IL
About Robert W Thumme Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT W THUMME DO (NPI 1275558660) is an individual emergency medicine provider in Zion, Illinois, licensed in Illinois (036.112912) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Midwestern Region Med Center, Inc, and is a graduate of Midwestern University, Chicago College Of Osteopathic Med (1997).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Robert W Thumme Do 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 Robert Thumme reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Zion, IL 60099
- Reassigned Medicare billing, Illinois enrollment
- 253 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 3
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.
Midwestern Region Med Center, Inc
Acute Care Hospitals · Zion, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60099 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ZION, IL 60099
ZION, IL 60099
ZION, IL 60099
ZION, IL 60099
ZION, IL 60099
ZION, IL 60099
ZION, IL 60099
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 Robert Thumme's NPI number?
The NPI number for Robert Thumme is 1275558660. It was assigned to this individual provider in the NPPES registry on July 13, 2006.
Where is Robert Thumme located?
Robert Thumme practices at Cancer Treatment Centers Of America 2520 Elisha Avenue, Zion, IL 60099. The listed phone number is (800) 322-9183.
What is Robert Thumme's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Robert Thumme enrolled in Medicare?
Yes. Robert Thumme 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 Robert Thumme's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Thumme reassigns Medicare benefits to City Of Hope Medical Group Of Illinois PLLC (Zion, 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 Robert Thumme's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Robert Thumme affiliated with any hospitals?
According to CMS data, Robert Thumme is affiliated with Midwestern Region Med Center, Inc.
When was this NPI record last updated?
The NPPES record for Robert Thumme was last updated on February 20, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Robert W Thumme, DO · NPI 1275558660
Emergency Medicine physician in Zion, Illinois. Individual provider, active in the CMS NPPES registry since July 13, 2006.
## Identity
- **NPI:** 1275558660 (Entity type: Individual)
- **Enumerated:** July 13, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 036.112912 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** CANCER TREATMENT CENTERS OF AMERICA, 2520 ELISHA AVENUE, Zion, IL 60099
- **Phone:** (800) 322-9183
## 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:** City Of Hope Medical Group Of Illinois PLLC (NPI 1548258072, Zion, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Midwestern University, Chicago College Of Osteopathic Med, class of 1997
## Record status
- **NPPES last updated:** February 20, 2020
- **Other identifiers:** Medicaid 43512600 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1275558660) · Data from the CMS NPPES public registry.