DR. ASIM MAHMOOD M.D.
NPI 1144260696
Anesthesiology in Zion, IL
About Dr. Asim Mahmood M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ASIM MAHMOOD M.D. (NPI 1144260696) is an individual anesthesiology provider in Zion, Illinois, licensed in Illinois (036107675) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Elmhurst Memorial Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
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
Dr. Asim Mahmood 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
6Medicare enrollment records show Asim Mahmood reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Zion, IL 60099
- Reassigned Medicare billing, Illinois enrollment
- 253 clinicians in this Medicare group
Pleasant Prairie, WI 53158
- Reassigned Medicare billing, Wisconsin enrollment
- 210 clinicians in this Medicare group
Evanston, IL 60201
- Reassigned Medicare billing, Illinois enrollment
- 4,841 clinicians in this Medicare group
Park Ridge, IL 60068
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 clinicians in this Medicare group
Oak Park, IL 60302
- Reassigned Medicare billing, Illinois enrollment
- 826 clinicians in this Medicare group
Peoria, IL 61615
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Associated Anesthesiologists Sc
- 337 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Elmhurst Memorial Hospital
Acute Care Hospitals · Elmhurst, ILAdvocate Lutheran General Hospital
Acute Care Hospitals · Park Ridge, ILFroedtert South Inc.
Acute Care Hospitals · Pleasant Prairie, WIOther 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 Asim Mahmood's NPI number?
The NPI number for Asim Mahmood is 1144260696. It was assigned to this individual provider in the NPPES registry on June 6, 2006.
Where is Asim Mahmood located?
Asim Mahmood practices at Cancer Treatment Centers Of America 2520 Elisha Avenue, Zion, IL 60099. The listed phone number is (800) 322-9183.
What is Asim Mahmood's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Asim Mahmood enrolled in Medicare?
Yes. Asim Mahmood 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 Asim Mahmood's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Asim Mahmood reassigns Medicare benefits to 6 organizations: City Of Hope Medical Group Of Illinois PLLC (Zion, IL), Vituity-Wisconsin Anesthesia Sc (Pleasant Prairie, WI), Endeavor Health Medical Group (Evanston, IL), Lutheran General Hospital (Park Ridge, IL), North American Partners In Anesthesia (illinois), LLC (Oak Park, 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 Asim Mahmood's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Asim Mahmood affiliated with any hospitals?
According to CMS data, Asim Mahmood is affiliated with Elmhurst Memorial Hospital, Advocate Lutheran General Hospital and Froedtert South Inc..
When was this NPI record last updated?
The NPPES record for Asim Mahmood was last updated on October 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Dr. Asim Mahmood, M.D. · NPI 1144260696
Anesthesiology physician in Zion, Illinois. Individual provider, active in the CMS NPPES registry since June 6, 2006.
## Identity
- **NPI:** 1144260696 (Entity type: Individual)
- **Enumerated:** June 6, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 036107675 (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:** 6 organizations under Medicare reassignment (form CMS-855R): City Of Hope Medical Group Of Illinois PLLC (NPI 1548258072, Zion, IL); Vituity-Wisconsin Anesthesia Sc (NPI 1821831975, Pleasant Prairie, WI); Endeavor Health Medical Group (NPI 1265695944, Evanston, IL); Lutheran General Hospital (NPI 1801809306, Park Ridge, IL); North American Partners In Anesthesia (illinois), LLC (NPI 1699032524, Oak Park, IL); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** October 21, 2025
- **Other identifiers:** Medicaid 036107675 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1144260696) · Data from the CMS NPPES public registry.