Alexander Joseph Diaz, AGACNP-BC
NPI 1790439263ActiveIndividual· Nurse Practitioner, Acute Care· Seattle, WA
Nurse Practitioner, Acute Care (AGACNP-BC) with Virginia Mason Medical Center, practicing in Seattle, Washington. Their prescriptions cost Medicare Part D more than their services did: $53,055 for 242 claims, against $12,964 paid for services in 2024. Abiomed was the largest of 6 companies reporting payments in 2025, $560.81 in all, mostly food and beverage. Lists Virginia Mason Medical Center as a hospital affiliation.
Overview
| NPI | 1790439263 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | AGACNP-BC |
| Sole proprietor | No |
| NPI issued | Feb 3, 2022 |
| Last updated in NPPES | Jul 25, 2025 |
| Certified by provider | Jul 25, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Acute Care Primary | 363LA2100X | AP61427907 | WA |
| Registered Nurse, Critical Care Medicine | 163WC0200X | RN60247719 | 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 (GA); Practitioner - Nurse Practitioner (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 139 |
|---|---|
| Services billed | 282 across 12 procedure codes |
| Paid by Medicare | $12,964 |
Part D prescriptions in 2024
| Prescriptions (claims) | 242 · 484 30-day fills |
|---|---|
| Patients | 115 |
| Total drug cost | $53,055 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Virginia Mason Medical CenterSeattle, WA · 867 clinicians
Hospital affiliation
- Virginia Mason Medical CenterSeattle, WA
Industry payments (Open Payments)
- 2025$560.81 · 13 payments from 6 companies
- 2024$329.45 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $227.92 | 3 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $137.31 | 4 |
| Kestra Medical Technology Services, Inc. | $130.13 | 3 |
| Cycle Pharmaceuticals Inc | $27.31 | 1 |
| Novartis Pharmaceuticals Corporation | $23.55 | 1 |
What the 2025 payments were for
- Food and Beverage$560.81 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 143 acute care nurse practitioners in Seattle · All acute care nurse practitioners in Washington