Angela Ristau, APRN, CNP
NPI 1912664145ActiveIndividual· Nurse Practitioner, Family· Mankato, MN
Nurse Practitioner, Family (APRN, CNP) with Open Door Health Center, practicing in Mankato, Minnesota. Their prescriptions cost Medicare Part D more than their services did: $206,838 for 2,324 claims, against $1,577 paid for services in 2024. Abbvie Inc. reported $16.98 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1912664145 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN, CNP |
| Sole proprietor | Yes |
| NPI issued | Nov 22, 2021 |
| Last updated in NPPES | Feb 18, 2025 |
| Certified by provider | Feb 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 7914 | MN |
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 (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 31 |
|---|---|
| Services billed | 112 across 15 procedure codes |
| Paid by Medicare | $1,577 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,324 · 3,861 30-day fills |
|---|---|
| Patients | 114 |
| Total drug cost | $206,838 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Open Door Health CenterMankato, MN · 8 clinicians
Industry payments (Open Payments)
- 2025$16.98 · 1 payment from 1 company
- 2024$64.51 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $16.98 | 1 |
What the 2025 payments were for
- Food and Beverage$16.98 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 44 family nurse practitioners in Mankato · All family nurse practitioners in Minnesota