Brent Joseph Landkammer, PMHNP-BC, ARNP
NPI 1275535866ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Kennewick, WA
Nurse Practitioner, Psych/Mental Health (PMHNP-BC, ARNP) with Columbia Basin Health Association, practicing in Kennewick, Washington. Part D covered 52 prescriptions written in 2024, 100% of them generic. E.R. Squibb & Sons, L.L.C. was the largest of 2 companies reporting payments in 2025, $41.26 in all, mostly food and beverage.
Overview
| NPI | 1275535866 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PMHNP-BC, ARNP |
| Sole proprietor | Yes |
| NPI issued | Aug 12, 2005 |
| Last updated in NPPES | Jan 14, 2022 |
| Certified by provider | Jan 12, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | AP60966969 | WA |
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 (WA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 52 · 70 30-day fills |
|---|---|
| Patients | 18 |
| Total drug cost | $663.74 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Columbia Basin Health AssociationConnell, WA · 42 clinicians
Industry payments (Open Payments)
- 2025$41.26 · 2 payments from 2 companies
- 2024$226.38 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $27.10 | 1 |
| Neurocrine Biosciences, Inc. | $14.16 | 1 |
What the 2025 payments were for
- Food and Beverage$41.26 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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