Richard John Mastenbrook, CNP
NPI 1619386083ActiveIndividual· Nurse Practitioner· Chisago City, MN
Nurse Practitioner (CNP) with Fairview Clinics, practicing in Chisago City, Minnesota. Their prescriptions cost Medicare Part D more than their services did: $259,434 for 5,624 claims, against $106,098 paid for services in 2024. Lists M Health Fairview University of Mn Medical Center as a hospital affiliation.
Overview
| NPI | 1619386083 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CNP |
| Sole proprietor | Yes |
| NPI issued | Aug 10, 2014 |
| Last updated in NPPES | Aug 11, 2022 |
| Certified by provider | Aug 11, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | AG0714121 | 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 | 186 |
|---|---|
| Services billed | 1,550 across 11 procedure codes |
| Paid by Medicare | $106,098 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,624 · 5,678 30-day fills |
|---|---|
| Patients | 314 |
| Total drug cost | $259,434 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Fairview ClinicsEagan, MN · 782 clinicians
Hospital affiliation
- M Health Fairview University of Mn Medical CenterMinneapolis, MN
Other facilities
- Grace HospiceHospice · Minneapolis, MN
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records