DR. KIRSTEN SASAKI MD
NPI 1679737548
Obstetrics & Gynecology in Naperville, IL
About Dr. Kirsten Sasaki Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KIRSTEN SASAKI MD (NPI 1679737548) is an individual obstetrics & gynecology provider in Naperville, Illinois, licensed in Illinois (036130314) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS, is affiliated with Advocate Lutheran General Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Dr. Kirsten Sasaki Md 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 Kirsten Sasaki 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
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, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60540 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NAPERVILLE, IL 60540
NAPERVILLE, IL 60540
NAPERVILLE, IL 60540
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 Kirsten Sasaki's NPI number?
The NPI number for Kirsten Sasaki is 1679737548. It was assigned to this individual provider in the NPPES registry on July 10, 2008.
Where is Kirsten Sasaki located?
Kirsten Sasaki practices at 120 Pam Davis Drive, Naperville, IL 60540. The listed phone number is (630) 428-2229.
What is Kirsten Sasaki's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Kirsten Sasaki enrolled in Medicare?
Yes. Kirsten Sasaki 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 Kirsten Sasaki's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kirsten Sasaki 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 Kirsten Sasaki's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kirsten Sasaki accept?
Health plans from Oscar Health list Kirsten Sasaki 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 Kirsten Sasaki affiliated with any hospitals?
According to CMS data, Kirsten Sasaki is affiliated with Advocate Lutheran General Hospital.
When was this NPI record last updated?
The NPPES record for Kirsten Sasaki was last updated on February 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Kirsten Sasaki, MD · NPI 1679737548
Obstetrics & Gynecology physician in Naperville, Illinois. Individual provider, active in the CMS NPPES registry since July 10, 2008.
## Identity
- **NPI:** 1679737548 (Entity type: Individual)
- **Enumerated:** July 10, 2008
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 036130314 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 120 PAM DAVIS DRIVE, Naperville, IL 60540
- **Phone:** (630) 428-2229
## 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 1285903849, Downers Grove, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Boston University School Of Medicine, class of 2008
## Record status
- **NPPES last updated:** February 4, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1679737548) · Data from the CMS NPPES public registry.