Cassandra Mae Vannortwick, NP-C
NPI 1336689009ActiveIndividual· Nurse Practitioner, Family· Battle Creek, MI
Nurse Practitioner, Family (NP-C) with Dayone Family Healthcare PC, practicing in Battle Creek, Michigan. Their prescriptions cost Medicare Part D more than their services did: $349,421 for 4,396 claims, against $22,296 paid for services in 2024. Pfizer Inc. was the largest of 3 companies reporting payments in 2025, $232.69 in all, mostly food and beverage. Lists Bronson Battle Creek Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1336689009 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP-C |
| Sole proprietor | No |
| NPI issued | Mar 1, 2017 |
| Last updated in NPPES | Sep 25, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 4704279996 | MI |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 181 |
|---|---|
| Services billed | 1,299 across 39 procedure codes |
| Paid by Medicare | $22,296 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,396 · 8,569 30-day fills |
|---|---|
| Patients | 927 |
| Total drug cost | $349,421 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Dayone Family Healthcare PCBattle Creek, MI · 15 clinicians
Hospital affiliations
- Bronson Battle Creek HospitalBattle Creek, MI
- Bronson Methodist HospitalKalamazoo, MI
Industry payments (Open Payments)
- 2025$232.69 · 10 payments from 3 companies
- 2024$106.97 · 5 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $163.64 | 7 |
| Novo Nordisk Inc | $44.20 | 2 |
| Axsome Therapeutics, Inc. | $24.85 | 1 |
What the 2025 payments were for
- Food and Beverage$232.69 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 76 family nurse practitioners in Battle Creek · All family nurse practitioners in Michigan