Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Alexander Joseph Diaz, AGACNP-BC

Individual provider Critical Care Medicine Registered Nurse · NPI 1790439263

Alexander Joseph Diaz, AGACNP-BC is a Nurse Practitioner in Seattle, Washington. Qualified in 2020, 6 years ago. Practices with Virginia Mason Medical Center, a 867-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
6
Licensed in
WA
In the registry since
2022
Specialties on file
2
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Practice location Address checks out

925 Seneca St
Seattle, WA 98101-2742
Phone: (206) 625-7373
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Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1802 Yakima Ave Ste 302, Tacoma, WA 98405-5305 — (253) 627-1244

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence AP61427907 (WA)
Critical Care Medicine Registered Nurse Taxonomy 163WC0200X · Licence RN60247719 (WA)

Record details

NPI number1790439263
Entity typeIndividual (Type 1)
GenderMale
Credentials AGACNP-BC
Sole proprietorNo
NPI enumeratedFebruary 3, 2022
Last updated in NPPESJuly 25, 2025
Certification dateJuly 25, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Virginia Mason Medical Center — 867 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients139
Services billed 282 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $561 13 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Virginia Mason Medical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 867 clinicians in the practice; 12 are shown here.

Other providers in Seattle