Christina Kassenbrock, FNP
NPI 1437781606ActiveIndividual· Nurse Practitioner, Family· Elgin, IL
Nurse Practitioner, Family (FNP) with Mathers Clinic LLC and 1 other group, practicing in Elgin, Illinois. Their prescriptions cost Medicare Part D more than their services did: $184,990 for 715 claims, against $3,449 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 13 companies reporting payments in 2025, $1,246 in all, mostly food and beverage.
Overview
| NPI | 1437781606 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP |
| Sole proprietor | No |
| NPI issued | Feb 6, 2020 |
| Last updated in NPPES | Aug 7, 2025 |
| Certified by provider | Aug 7, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 209.020138 | 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 | 14 |
|---|---|
| Services billed | 64 across 5 procedure codes |
| Paid by Medicare | $3,449 |
Part D prescriptions in 2024
| Prescriptions (claims) | 715 · 939 30-day fills |
|---|---|
| Patients | 34 |
| Total drug cost | $184,990 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical groups
- Mathers Clinic LLCCrystal Lake, IL · 20 clinicians
- Mental Health Connections, PLLCCrystal Lake, IL · 4 clinicians
Industry payments (Open Payments)
- 2025$1,246 · 58 payments from 13 companies
- 2024$738.42 · 40 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $245.71 | 19 |
| Teva Pharmaceuticals USA, Inc. | $232.30 | 8 |
| Axsome Therapeutics, Inc. | $200.49 | 7 |
| Alkermes, Inc. | $161.51 | 6 |
| Neurocrine Biosciences, Inc. | $99.94 | 4 |
What the 2025 payments were for
- Food and Beverage$1,175 · 57 payments
- Education$71.49 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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