SULTAN S HASAPIS PSYD
NPI 1639510555
Psychologist in Glen Ellyn, IL
About Sultan S Hasapis Psyd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SULTAN S HASAPIS PSYD (NPI 1639510555) is an individual psychologist in Glen Ellyn, Illinois and active in the NPI registry since July 2013. She is enrolled in Medicare PECOS and is a graduate of Midwestern University, Chicago College Of Osteopathic Med (2013).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Sultan S Hasapis Psyd 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 Sultan Hasapis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Glen Ellyn, IL 60137
- Reassigned Medicare billing, Illinois enrollment
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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GLEN ELLYN, IL 60137
GLEN ELLYN, IL 60137
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 Sultan Hasapis's NPI number?
The NPI number for Sultan Hasapis is 1639510555. It was assigned to this individual provider in the NPPES registry on July 8, 2013. The provider is also known as Sultan S Oner Psyd.
Where is Sultan Hasapis located?
Sultan Hasapis practices at 800 Roosevelt Road Building B, Suite 419A, Glen Ellyn, IL 60137. The listed phone number is (630) 908-0098.
What is Sultan Hasapis's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Sultan Hasapis enrolled in Medicare?
Yes. Sultan Hasapis 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 Sultan Hasapis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sultan Hasapis reassigns Medicare benefits to Ally Mental Health, PLLC (Glen Ellyn, 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 Sultan Hasapis'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 Sultan Hasapis was last updated on January 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.