Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Chiyong Byun, DI
Registered Dietitian in Redmond, WA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1508974643
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Registry record
Entity type Individual (Type 1)
Name Ms. Chiyong Byun
Credential DI
Sex Female
Practice address 16255 Ne 87th St Ste 150, Redmond, WA, 98052
Phone (425) 882-1697
Enumeration date Aug 28, 2006
Last updated in NPPES Dec 26, 2024
Taxonomy & licenses
133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License DI00001769 (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
Is NPI 1508974643 active?
Yes, as of the latest NPPES snapshot, NPI 1508974643 is active (record last updated 2024-12-26).
How do I verify Chiyong Byun's NPI record?
Cross-check NPI 1508974643 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-26.