NASREEN FATIMA AHMED M.D.
NPI 1699070540
Hospitalist in Libertyville, IL
About Nasreen Fatima Ahmed M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NASREEN FATIMA AHMED M.D. (NPI 1699070540) is an individual hospitalist provider in Libertyville, Illinois, licensed in Illinois (036131857) and active in the NPI registry since January 2011. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Nasreen Fatima Ahmed M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Nasreen Ahmed reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Park Ridge, IL 60068
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 clinicians in this Medicare group
Evanston, IL 60201
- Reassigned Medicare billing, Illinois enrollment
- 4,841 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60048 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LIBERTYVILLE, IL 60048
LIBERTYVILLE, IL 60048
LIBERTYVILLE, IL 60048
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 Nasreen Ahmed's NPI number?
The NPI number for Nasreen Ahmed is 1699070540. It was assigned to this individual provider in the NPPES registry on January 24, 2011.
Where is Nasreen Ahmed located?
Nasreen Ahmed practices at 801 S Milwaukee Ave, Libertyville, IL 60048. The listed phone number is (847) 990-5450.
What is Nasreen Ahmed's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Nasreen Ahmed enrolled in Medicare?
Yes. Nasreen Ahmed is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nasreen Ahmed's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nasreen Ahmed reassigns Medicare benefits to 2 organizations: Lutheran General Hospital (Park Ridge, IL) and Endeavor Health Medical Group (Evanston, IL). 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 Nasreen Ahmed's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Nasreen Ahmed was last updated on May 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Nasreen Fatima Ahmed, M.D. · NPI 1699070540
Hospitalist physician in Libertyville, Illinois. Individual provider, active in the CMS NPPES registry since January 24, 2011.
## Identity
- **NPI:** 1699070540 (Entity type: Individual)
- **Enumerated:** January 24, 2011
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 036131857 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 801 S MILWAUKEE AVE, Libertyville, IL 60048-3204
- **Phone:** (847) 990-5450
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Lutheran General Hospital (NPI 1801809306, Park Ridge, IL); Endeavor Health Medical Group (NPI 1265695944, Evanston, IL) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 17, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1699070540) · Data from the CMS NPPES public registry.