Mary Kay Larson, APN
NPI 1124293691ActiveIndividual· Nurse Practitioner· Warrenville, IL
Nurse Practitioner (APN) in Warrenville, Illinois, licensed in IL, with an NPI issued in April 2008. Part D covered 64 prescriptions written in 2024, 98% of them generic.
Overview
| NPI | 1124293691 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APN |
| Sole proprietor | No |
| NPI issued | Apr 25, 2008 |
| Last updated in NPPES | Sep 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209006678 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (IL); Practitioner - Nurse Practitioner (MO); Practitioner - Nurse Practitioner (NC); Practitioner - Nurse Practitioner (NE); Practitioner - Nurse Practitioner (OH); Practitioner - Nurse Practitioner (SD); Practitioner - Nurse Practitioner (VA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 64 · 109 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $810.56 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 22 nurse practitioners in Warrenville · All nurse practitioners in Illinois