Walter A. Lajara-Nanson, M.D.
NPI 1528050283ActiveIndividual· Psychiatry & Neurology, Neurology· Great Falls, MT
Psychiatry & Neurology, Neurology (M.D.) with Benefis Hospitals Inc, practicing in Great Falls, Montana. Their prescriptions cost Medicare Part D more than their services did: $921,630 for 3,235 claims, against $81,590 paid for services in 2024. Abbvie Inc. was the largest of 8 companies reporting payments in 2025, $501.32 in all, mostly food and beverage. Lists Benefis Hospitals Inc as a hospital affiliation.
Overview
| NPI | 1528050283 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 18, 2005 |
| Last updated in NPPES | Apr 8, 2024 |
| Certified by provider | Apr 8, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 75041 | MT |
| Psychiatry & Neurology, Neurology | 2084N0400X | L4510 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neurology (MT); Practitioner - Neurology (NE); Practitioner - Neurology (OK); Practitioner - Neurology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 473 |
|---|---|
| Services billed | 1,122 across 42 procedure codes |
| Paid by Medicare | $81,590 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,235 · 4,398 30-day fills |
|---|---|
| Patients | 260 |
| Total drug cost | $921,630 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Neurology |
Medical group
- Benefis Hospitals IncGreat Falls, MT · 384 clinicians
Hospital affiliation
- Benefis Hospitals IncGreat Falls, MT
Industry payments (Open Payments)
- 2025$501.32 · 18 payments from 8 companies
- 2024$783.79 · 31 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $160.28 | 8 |
| Tg Therapeutics, Inc. | $110.50 | 3 |
| Livanova USA, Inc. | $105.95 | 1 |
| Csl Behring | $40.24 | 2 |
| Argenx US, Inc. | $28.46 | 1 |
What the 2025 payments were for
- Food and Beverage$501.32 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Psychiatry & Neurology, Neurology providers in Montana →