Guillermo Diaz, NP-P
NPI 1164975801ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Hicksville, NY
Nurse Practitioner, Psych/Mental Health (NP-P) in Hicksville, New York, licensed in NY, with an NPI issued in July 2016. Part D covered 210 prescriptions written in 2024, 98% of them generic.
Overview
| NPI | 1164975801 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP-P |
| Sole proprietor | No |
| NPI issued | Jul 29, 2016 |
| Last updated in NPPES | Oct 12, 2026 |
| Certified by provider | Oct 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 402068 | NY |
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 - Nurse Practitioner (CO); Practitioner - Nurse Practitioner (CT); Practitioner - Nurse Practitioner (NY) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 210 · 290 30-day fills |
|---|---|
| Patients | 52 |
| Total drug cost | $5,717 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
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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