Rachael Demattei, APRN
NPI 1891443289ActiveIndividual· Nurse Practitioner· O Fallon, IL
Nurse Practitioner (APRN) in O Fallon, Illinois, trained at Southern Illinois University School of Medicine (class of 2022). Their prescriptions cost Medicare Part D more than their services did: $181,432 for 234 claims, against $5,404 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 39 companies reporting payments in 2025, $2,441 in all, mostly food and beverage.
Overview
| NPI | 1891443289 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN |
| Sole proprietor | No |
| NPI issued | Mar 15, 2022 |
| Last updated in NPPES | Oct 17, 2023 |
| Certified by provider | Oct 16, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209027937 | IL |
| Registered Nurse | 163W00000X | 041495134 | IL |
| Registered Nurse | 163W00000X | 2017003138 | MO |
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 - Hematology/Oncology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 60 |
|---|---|
| Services billed | 110 across 18 procedure codes |
| Paid by Medicare | $5,404 |
Part D prescriptions in 2024
| Prescriptions (claims) | 234 · 345 30-day fills |
|---|---|
| Patients | 110 |
| Total drug cost | $181,432 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Southern Illinois University School of Medicine |
|---|---|
| Graduation year | 2022 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Cancer Care Specialists of Central Illinois SCO Fallon, IL · 31 clinicians
Hospital affiliations
- Fairfield Memorial Hospital 1Fairfield, IL
- Hshs St Elizabeth's HospitalO Fallon, IL
- Red Bud Regional HospitalRed Bud, IL
- Sparta Community HospitalSparta, IL
Industry payments (Open Payments)
- 2025$2,441 · 118 payments from 39 companies
- 2024$2,787 · 127 payments from 38 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $335.04 | 15 |
| Merck Sharp & Dohme LLC | $204.71 | 10 |
| Janssen Biotech, Inc. | $142.87 | 8 |
| E.R. Squibb & Sons, L.L.C. | $99.46 | 4 |
| Abbvie Inc. | $95.65 | 5 |
What the 2025 payments were for
- Food and Beverage$2,363 · 117 payments
- Education$77.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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