Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Jason Miles Castaneda, MD

Individual provider Internal Medicine Physician · NPI 1891372587

Jason Miles Castaneda, MD is an Internal Medicine Physician in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2021.

Licensed in
WA
In the registry since
2021
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

325 9th Ave
Seattle, WA 98104-2420
Phone: (206) 520-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MD61458667 (WA)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD61458667 (WA)

Record details

NPI number1891372587
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 27, 2021
Last updated in NPPESMay 9, 2024
Certification dateMay 9, 2024

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