MRS. KIRSTI ROSE WILLIS APN
NPI 1023670247
Nurse Practitioner in Naperville, IL
About Mrs. Kirsti Rose Willis Apn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. KIRSTI ROSE WILLIS APN (NPI 1023670247) is an individual nurse practitioner in Naperville, Illinois, licensed in Illinois (209018126) and active in the NPI registry since July 2019. She is enrolled in Medicare PECOS, is affiliated with Edward Hospital, and maintains a secondary practice location in Plainfield.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 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
Mrs. Kirsti Rose Willis Apn 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 Reassignments
6Medicare enrollment records show Kirsti Willis reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Naperville, IL 60540
- Reassigned Medicare billing, Illinois enrollment
- 268 clinicians in this Medicare group
Winfield, IL 60190
- Reassigned Medicare billing, Illinois enrollment
- 64 clinicians in this Medicare group
Aurora, IL 60506
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Cepamerica Illinois LLP
- 982 clinicians in this Medicare group
Elmhurst, IL 60126
- Reassigned Medicare billing, Illinois enrollment
- 205 clinicians in this Medicare group
Evanston, IL 60201
- Reassigned Medicare billing, Illinois enrollment
- 4,841 clinicians in this Medicare group
Urbana, IL 61801
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Carle Health Care Incorporated
- 2,516 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Edward Hospital
Acute Care Hospitals · Naperville, ILNorthwestern Medicine Central Dupage Hospital
Acute Care Hospitals · Winfield, 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 20
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 Kirsti Willis's NPI number?
The NPI number for Kirsti Willis is 1023670247. It was assigned to this individual provider in the NPPES registry on July 9, 2019. The provider is also known as Kirsti Rose Mitchell Apn.
Where is Kirsti Willis located?
Kirsti Willis practices at 801 S Washington St, Naperville, IL 60540. The listed phone number is (630) 527-3000.
What is Kirsti Willis's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Kirsti Willis enrolled in Medicare?
Yes. Kirsti Willis 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 organizations bill Medicare for Kirsti Willis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kirsti Willis reassigns Medicare benefits to 6 organizations: Edward Hospital (Naperville, IL), Central Dupage Emergency Physicians, PC (Winfield, IL), Cep America - Illinois, LLP (Aurora, IL), Elmhurst Memorial Hospital (Elmhurst, IL), Endeavor Health Medical Group (Evanston, IL) and 1 more organization, listed in the Medicare section above. 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 Kirsti Willis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Kirsti Willis affiliated with any hospitals?
According to CMS data, Kirsti Willis is affiliated with Edward Hospital and Northwestern Medicine Central Dupage Hospital.
When was this NPI record last updated?
The NPPES record for Kirsti Willis was last updated on December 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Mrs. Kirsti Rose Willis, APN · NPI 1023670247
Nurse Practitioner physician in Naperville, Illinois. Individual provider, active in the CMS NPPES registry since July 9, 2019.
## Identity
- **NPI:** 1023670247 (Entity type: Individual)
- **Enumerated:** July 9, 2019
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 209018126 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 801 S WASHINGTON ST, Naperville, IL 60540-7430
- **Phone:** (630) 527-3000
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Edward Hospital (NPI 1013969013, Naperville, IL); Central Dupage Emergency Physicians, PC (NPI 1619074028, Winfield, IL); Cep America - Illinois, LLP (NPI 1164975371, Aurora, IL); Elmhurst Memorial Hospital (NPI 1548306343, Elmhurst, IL); Endeavor Health Medical Group (NPI 1497701882, Evanston, IL); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** December 2, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1023670247) · Data from the CMS NPPES public registry.