Alexander Diaz
NPI 1518428812 · Diagnostic Radiology Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Diaz is a Diagnostic Radiology Physician provider in Seattle, WA (NPI 1518428812).
Provider details
- NPI number
- 1518428812
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- MD61575447 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 325 9th AveSeattle, WA 98104-2420Phone: (206) 520-5000
Registry dates
- Enumerated
- 2019-03-28
- Last updated
- 2025-10-03
- Certified
- 2025-10-03
Frequently asked questions
- What is Alexander Diaz's NPI number?
- Alexander Diaz's National Provider Identifier (NPI) is 1518428812, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Diaz's specialty?
- Alexander Diaz is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Diaz located?
- Alexander Diaz's practice location on file with NPPES is 1959 Ne Pacific St, Seattle, WA 98195.
- What is Alexander Diaz's phone number?
- The practice phone number listed in the NPPES registry for Alexander Diaz is (206) 598-3300.
- Does Alexander Diaz accept Medicare?
- Alexander Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Diaz's NPI active?
- Yes — Alexander Diaz's NPI (1518428812) is active in the NPPES registry as of the last update on 2025-10-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.