AMMAR HAYANI MD
NPI 1689737348
Pediatrics - Pediatric Hematology-Oncology in Winfield, IL
About Ammar Hayani Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AMMAR HAYANI MD (NPI 1689737348) is an individual pediatric hematology-oncology provider in Winfield, Illinois, licensed in Illinois (036082406) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS.
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 (PECOS)
Ammar Hayani Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Ammar Hayani 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
- 1,664 clinicians in this Medicare group
Chicago, IL 60611
- Reassigned Medicare billing, Illinois enrollment
- 826 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.
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.
WINFIELD, IL 60190
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 Ammar Hayani's NPI number?
The NPI number for Ammar Hayani is 1689737348. It was assigned to this individual provider in the NPPES registry on December 17, 2006.
Where is Ammar Hayani located?
Ammar Hayani practices at 25 N Winfield Rd, Winfield, IL 60190. The listed phone number is (630) 933-4291.
What is Ammar Hayani's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.
Is Ammar Hayani enrolled in Medicare?
Yes. Ammar Hayani is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ammar Hayani's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ammar Hayani reassigns Medicare benefits to 2 organizations: Central Dupage Physician Group (Carol Stream, IL) and Lurie Children's Medical Group Inc (Chicago, 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 Ammar Hayani'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 Ammar Hayani was last updated on May 11, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.