HAFSA SIRAJUDDIN
NPI 1821739046
Family Medicine in Westmont, IL
About Hafsa Sirajuddin NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HAFSA SIRAJUDDIN (NPI 1821739046) is an individual family medicine provider in Westmont, Illinois, licensed in Illinois (036.172449) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS, is affiliated with Advocate Lutheran General Hospital, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Hafsa Sirajuddin 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 Hafsa Sirajuddin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Downers Grove, IL 60515
- Reassigned Medicare billing, Illinois enrollment
- 4,870 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Lutheran General Hospital
Acute Care Hospitals · Park Ridge, ILAdvocate Good Samaritan Hospital
Acute Care Hospitals · Downers Grove, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60559 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WESTMONT, IL 60559
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 Hafsa Sirajuddin's NPI number?
The NPI number for Hafsa Sirajuddin is 1821739046. It was assigned to this individual provider in the NPPES registry on April 3, 2022.
Where is Hafsa Sirajuddin located?
Hafsa Sirajuddin practices at 639 Blackhawk Dr, Westmont, IL 60559. The listed phone number is (630) 963-5440.
What is Hafsa Sirajuddin's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Hafsa Sirajuddin enrolled in Medicare?
Yes. Hafsa Sirajuddin 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 Hafsa Sirajuddin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hafsa Sirajuddin reassigns Medicare benefits to Advocate Health And Hospitals Corporation (Downers Grove, 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 Hafsa Sirajuddin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Hafsa Sirajuddin accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Hafsa Sirajuddin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Hafsa Sirajuddin affiliated with any hospitals?
According to CMS data, Hafsa Sirajuddin is affiliated with Advocate Lutheran General Hospital and Advocate Good Samaritan Hospital.
When was this NPI record last updated?
The NPPES record for Hafsa Sirajuddin was last updated on January 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Hafsa Sirajuddin · NPI 1821739046
Family Medicine physician in Westmont, Illinois. Individual provider, active in the CMS NPPES registry since April 3, 2022.
## Identity
- **NPI:** 1821739046 (Entity type: Individual)
- **Enumerated:** April 3, 2022
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 036.172449 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 639 BLACKHAWK DR, Westmont, IL 60559-1115
- **Phone:** (630) 963-5440
## 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:** Advocate Health And Hospitals Corporation (NPI 1578670543, Downers Grove, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** January 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1821739046) · Data from the CMS NPPES public registry.