Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Brynn Yael Seiden
Specialist in Bellevue, WA · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831471606
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Registry record
Entity type Individual (Type 1)
Name Brynn Yael Seiden
Sex Female
Practice address 14700 Ne 8th St Ste 115, Bellevue, WA, 98007
Phone (425) 644-8386
Enumeration date Sep 16, 2011
Last updated in NPPES Sep 16, 2011
Taxonomy & licenses
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 is the NPI number for Brynn Seiden?
The National Provider Identifier (NPI) for Brynn Seiden is 1831471606, a Type 1 (individual) record in the CMS NPPES registry.
Where does Brynn Seiden practice?
The practice location on file with NPPES is in Bellevue, WA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-16.