Kirsti Willis, APN
NPI 1023670247 · Nurse Practitioner · Naperville, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kirsti Willis, APN is a Nurse Practitioner provider in Naperville, IL (NPI 1023670247).
Provider details
- NPI number
- 1023670247
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN
- Sex
- Female
- Sole proprietor
- No
- License
- 209018126 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
114 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 71 | $105 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 43 | $153 |
Typical Medicare-allowed amounts for these services range $105–$153 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cyclobenzaprine Hcl | 48 | 45 |
| Ibuprofen | 42 | 37 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 32 | 32 |
| Methylprednisolone | 27 | 27 |
| Ondansetronbrand: Ondansetron Odt | 25 | 25 |
| Cephalexin | 23 | 23 |
| Tramadol Hcl | 23 | 23 |
Practice location
Mailing address
Additional practice locations (1)
- 24600 W 127th StPlainfield, IL 60585-9507Phone: (630) 961-7485Fax: (815) 731-4406
Registry dates
- Enumerated
- 2019-07-09
- Last updated
- 2025-12-02
- Certified
- 2025-12-02
Frequently asked questions
- What is Kirsti Willis's NPI number?
- Kirsti Willis's National Provider Identifier (NPI) is 1023670247, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kirsti Willis's specialty?
- Kirsti Willis is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kirsti Willis located?
- Kirsti Willis's practice location on file with NPPES is 801 S Washington St, Naperville, IL 60540-7430.
- What is Kirsti Willis's phone number?
- The practice phone number listed in the NPPES registry for Kirsti Willis is (630) 527-3000.
- Does Kirsti Willis accept Medicare?
- Kirsti Willis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kirsti Willis's NPI active?
- Yes — Kirsti Willis's NPI (1023670247) is active in the NPPES registry as of the last update on 2025-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.