Brian L. Nielsen, DO
NPI 1710143573ActiveIndividual· Internal Medicine· Colton, CA
Internal Medicine (DO) in Colton, California, licensed in CA, with an NPI issued in July 2008. Part D covered 364 prescriptions written in 2024, 93% of them generic.
Overview
| NPI | 1710143573 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jul 31, 2008 |
| Last updated in NPPES | Dec 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 20A10451 | CA |
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 - Hospitalist (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 364 · 479 30-day fills |
|---|---|
| Patients | 165 |
| Total drug cost | $17,037 |
| Generic share | 93% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 71 internal medicine physicians in Colton · All internal medicine physicians in California