DR. STEPHANIE KAY M.D.
NPI 1861690927
Family Medicine in Naperville, IL
About Dr. Stephanie Kay M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEPHANIE KAY M.D. (NPI 1861690927) is an individual family medicine provider in Naperville, Illinois, licensed in Illinois (036.125371) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Stephanie Kay M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Stephanie Kay 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
- 1,061 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 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Stephanie Kay's NPI number?
The NPI number for Stephanie Kay is 1861690927. It was assigned to this individual provider in the NPPES registry on July 10, 2007.
Where is Stephanie Kay located?
Stephanie Kay practices at 640 S Washington St Suite 350, Naperville, IL 60540. The listed phone number is (630) 717-2646.
What is Stephanie Kay's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Stephanie Kay enrolled in Medicare?
Yes. Stephanie Kay is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Stephanie Kay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Kay reassigns Medicare benefits to Dupage Medical Group Ltd (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 Stephanie Kay'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 Stephanie Kay was last updated on September 23, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Dr. Stephanie Kay, M.D. · NPI 1861690927
Family Medicine physician in Naperville, Illinois. Individual provider, active in the CMS NPPES registry since July 10, 2007.
## Identity
- **NPI:** 1861690927 (Entity type: Individual)
- **Enumerated:** July 10, 2007
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 036.125371 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 640 S WASHINGTON ST, SUITE 350, Naperville, IL 60540-6603
- **Phone:** (630) 717-2646
## 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:** Dupage Medical Group Ltd (NPI 1801833983, Downers Grove, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 23, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1861690927) · Data from the CMS NPPES public registry.