Katherine Masterton, APRN, CNP
NPI 1891433785ActiveIndividual· Nurse Practitioner· Warrenville, IL
Nurse Practitioner (APRN, CNP) in Warrenville, Illinois, trained at Rush Medical College of Rush University (class of 2021). Their prescriptions cost Medicare Part D more than their services did: $2,841,225 for 949 claims, against $132,092 paid for services in 2024. Mirati Therapeutics, Inc. was the largest of 10 companies reporting payments in 2024, $371.21 in all, mostly food and beverage.
Overview
| NPI | 1891433785 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN, CNP |
| Sole proprietor | No |
| NPI issued | May 22, 2022 |
| Last updated in NPPES | Feb 5, 2025 |
| Certified by provider | Feb 5, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209024984 | IL |
| Nurse Practitioner, Acute Care | 363LA2100X | 209024984 | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 144 |
|---|---|
| Services billed | 5,374 across 79 procedure codes |
| Paid by Medicare | $132,092 |
Part D prescriptions in 2024
| Prescriptions (claims) | 949 · 1,487 30-day fills |
|---|---|
| Patients | 240 |
| Total drug cost | $2,841,225 |
| Generic share | 68% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Nurse Practitioner |
Medical group
- Northwestern Medical Faculty FoundationChicago, IL · 4,503 clinicians
Hospital affiliations
Industry payments (Open Payments)
- 2024$371.21 · 13 payments from 10 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Mirati Therapeutics, Inc. | $92.67 | 1 |
| Genentech USA, Inc. | $52.85 | 2 |
| Novartis Pharmaceuticals Corporation | $40.47 | 2 |
| Janssen Biotech, Inc. | $37.81 | 2 |
| Astrazeneca Pharmaceuticals LP | $31.54 | 1 |
What the 2024 payments were for
- Food and Beverage$371.21 · 13 payments
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