Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Joseph Castro
Physician Assistant in Bellevue, WA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609446236
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Registry record
Entity type Individual (Type 1)
Name Joseph Castro
Sex Male
Practice address 14450 Ne 29th Pl Ste 230, Bellevue, WA, 98007
Phone (425) 998-7884
Enumeration date Jun 27, 2021
Last updated in NPPES Jan 14, 2025
Taxonomy & licenses
363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 61226668 (WA) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 61226668 (WA) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Joseph Castro?
Joseph Castro is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-14.