Derek Diaz, NP
NPI 1831811157ActiveIndividual· Nurse Practitioner· Ontario, CA
Nurse Practitioner (NP) in Ontario, California, trained at Western Un of Hlth Sciences, Col of Podiatric Med (class of 2022). Mostly services rather than prescriptions: Medicare paid $299,380 for 429 patients in 2024, with only 13 Part D claims.
Overview
| NPI | 1831811157 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | Yes |
| NPI issued | Sep 13, 2022 |
| Last updated in NPPES | Sep 13, 2022 |
| Certified by provider | Sep 13, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 95021897 | 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 - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 429 |
|---|---|
| Services billed | 3,659 across 3 procedure codes |
| Paid by Medicare | $299,380 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13 · 13 30-day fills |
|---|---|
| Total drug cost | $160.11 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Western Un of Hlth Sciences, Col of Podiatric Med |
|---|---|
| Graduation year | 2022 |
| Medicare specialty | Nurse Practitioner |
Medical group
- Michael Decker DO, Inc.Sonoma, CA · 23 clinicians
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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