Larissa K. Halvorson, APRN, CNP
NPI 1861193930ActiveIndividual· Nurse Practitioner· Mankato, MN
Nurse Practitioner (APRN, CNP) with Mankato Clinic Ltd, practicing in Mankato, Minnesota. 185 Medicare patients in 2024, $14,467 paid; nearly all of their 339 Part D prescriptions were generic (94%). Medtronic, Inc. was the largest of 2 companies reporting payments in 2025, $27.54 in all, mostly food and beverage. Lists Mayo Clinic Health System - Mankato as a hospital affiliation.
Overview
| NPI | 1861193930 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN, CNP |
| Sole proprietor | No |
| NPI issued | Mar 15, 2023 |
| Last updated in NPPES | Sep 6, 2024 |
| Certified by provider | Sep 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 10188 | MN |
| Registered Nurse | 163W00000X | 2330422 | 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 | 185 |
|---|---|
| Services billed | 454 across 23 procedure codes |
| Paid by Medicare | $14,467 |
Part D prescriptions in 2024
| Prescriptions (claims) | 339 · 468 30-day fills |
|---|---|
| Patients | 140 |
| Total drug cost | $7,526 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2023 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Mankato Clinic LtdMankato, MN · 242 clinicians
Hospital affiliation
- Mayo Clinic Health System - MankatoMankato, MN
Industry payments (Open Payments)
- 2025$27.54 · 2 payments from 2 companies
- 2024$75.67 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $15.42 | 1 |
| Organon LLC | $12.12 | 1 |
What the 2025 payments were for
- Food and Beverage$27.54 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 64 nurse practitioners in Mankato · All nurse practitioners in Minnesota