Nash John Hallfrisch, PA-C
NPI 1184102162ActiveIndividual· Physician Assistant, Medical· Great Falls, MT
Physician Assistant, Medical (PA-C) with Great Falls Clinic LLC, practicing in Great Falls, Montana. Their prescriptions cost Medicare Part D more than their services did: $783,949 for 8,639 claims, against $111,410 paid for services in 2024. Abbvie Inc. was the largest of 14 companies reporting payments in 2025, $1,161 in all, mostly food and beverage. Lists Benefis Hospitals Inc and 1 other hospital as hospital affiliations.
Overview
| NPI | 1184102162 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Aug 1, 2018 |
| Last updated in NPPES | Jul 21, 2026 |
| Certified by provider | Jul 21, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 69159 | MT |
| Clinic/Center, Primary Care | 261QP2300X | MED-PAC-LIC-69159 | MT |
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 - Physician Assistant (MT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 467 |
|---|---|
| Services billed | 2,583 across 34 procedure codes |
| Paid by Medicare | $111,410 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,639 · 19,687 30-day fills |
|---|---|
| Patients | 604 |
| Total drug cost | $783,949 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Great Falls Clinic LLCGreat Falls, MT · 72 clinicians
Hospital affiliations
- Benefis Hospitals IncGreat Falls, MT
- Great Falls Clinic HospitalGreat Falls, MT
Other facilities
- Benefis Community Care IncHome health agency · Great Falls, MT
- Granite Peak Home HealthHome health agency · Miles City, MT
Industry payments (Open Payments)
- 2025$1,161 · 90 payments from 14 companies
- 2024$1,047 · 66 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $310.58 | 22 |
| Astrazeneca Pharmaceuticals LP | $259.99 | 32 |
| Amgen Inc. | $189.60 | 15 |
| Exact Sciences Corporation | $85.94 | 4 |
| Otsuka America Pharmaceutical, Inc. | $81.24 | 5 |
What the 2025 payments were for
- Food and Beverage$1,161 · 90 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 25 physician assistants in Great Falls · All physician assistants in Montana