Registry data as of Aug 27, 2026

Alexander Diaz, AGACNP-BC

Critical Care Medicine Registered Nurse · Seattle, WA

Alexander Diaz, AGACNP-BC is a critical care medicine registered nurse with a practice address in Seattle, Washington, and NPI 1790439263, issued on Feb 3, 2022. Check the license (Washington AP61427907, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1790439263
Name
Alexander Diaz
Credential
AGACNP-BC
Primary taxonomy
Critical Care Medicine Registered Nurse 163WC0200X
License numbers
AP61427907 WA
RN60247719 WA
Self-reported in NPPES; status is on the state search
Practice location
925 Seneca St, Seattle, WA 98101
Phone
(206) 625-7373
Enumerated
Feb 3, 2022
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 925 Seneca St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jonathan Abe, MDInternal Medicine Physician1346090875
  2. Katherine Adler, MDInternal Medicine Physician1841418886
  3. Sanjhavi AgarwalStudent in an Organized Health Care Education/Training Program1902410053
  4. Jason Agtarap, MDStudent in an Organized Health Care Education/Training Program1194576181
  5. Shani AharonStudent in an Organized Health Care Education/Training Program1316526650
  6. Mohammad Ahmed, DOHospitalist Physician1063819381

Verify Alexander Diaz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Washington board licenses this profession
    Search for license AP61427907
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

71% fewer Medicare Part D claims than the average critical care medicine registered nurse in 2024

242 Medicare Part D claims for 115 beneficiaries, against an average of 832 among the 775 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Alexander Diaz242
  2. Specialty average832

Most prescribed

  1. Metoprolol Succinate71 claims
  2. Pantoprazole Sodium24 claims
  3. Xarelto24 claims
  4. Sotalol16 claims
  5. Amiodarone Hcl15 claims
  6. Eliquis12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's Medicare quality score for 2023: 90.8 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score
  2. Costout of 100 · 30%
  3. Promoting interoperabilityout of 100 · 25%98.0
  4. Improvement activities20 of 40 points · 15%50.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $329.45

7 payments, mostly food and beverage; the largest payer was Boston Scientific Corporation. The 1,048 providers of this specialty with any payment received $452.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alexander Diaz$329.45
  2. Specialty average$452.05

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital or facility affiliation

  1. Virginia Mason Medical CenterSeattle, WA · Acute Care Hospitals5 of 5 stars

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Critical Care Medicine Registered Nurse providers in Washington

There are 137 critical care medicine registered nurse records in Washington.

Other critical care medicine registered nurse records in Washington

  1. Colleen Adams, RNTacoma, WA1679002810
  2. Brian Alexander, RNTacoma, WA1518237775
  3. Hilda Amoako, RNBothell, WA1831019959
  4. Terri Andrews, RNTacoma, WA1629451331
  5. Ekaette Angell, RNRuston, WA1013830892
  6. Marleah Angelov, DNP, ARNP, FNP-BCSeattle, WA1659057941
  7. Stefanie AringVancouver, WA1811440548
  8. Rogelio Aular, RNOlympia, WA1265362875
  9. Ana Beatriz Balades De AndradeSpokane, WA1366178998
  10. Alisha Barker, CRNASpokane, WA1033791165

Common questions

What is Alexander Diaz, AGACNP-BC's NPI number?

Alexander Diaz, AGACNP-BC's National Provider Identifier (NPI) is 1790439263, issued on Feb 3, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Alexander Diaz, AGACNP-BC located?

The NPPES record lists a practice address at 925 Seneca St, Seattle, WA, 98101. Phone: (206) 625-7373. Providers update this record themselves, so call before visiting.

How can I verify Alexander Diaz, AGACNP-BC's license?

NPPES lists Washington license number AP61427907, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does Alexander Diaz, AGACNP-BC prescribe under Medicare Part D?

In 2024, Alexander Diaz, AGACNP-BC had 242 Medicare Part D claims for 115 beneficiaries; the average among critical care medicine registered nurse prescribers was 832. Part D covers Medicare prescriptions only.

What is Alexander Diaz, AGACNP-BC's Medicare quality score?

The 2023 MIPS final score is 90.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.