Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Sean Alan Christiansen, D.D.S
Dentist in Sumner, WA · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1952569287
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Registry record
Entity type Individual (Type 1)
Name Dr. Sean Alan Christiansen
Credential D.D.S
Sex Male
Practice address 16202 64th St E, Ste 101, Sumner, WA, 98390
Phone (253) 891-0977
Enumeration date May 22, 2008
Last updated in NPPES May 22, 2008
Taxonomy & licenses
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees.
About the DDS credential
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 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.
What specialty is Sean Christiansen?
Sean Christiansen is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → David Molen Oral and Maxillofacial Surgery (Dentist) · Sumner, WA NPI 1689676082 Colton/Christiansen Pllc General Practice Dentistry · Sumner, WA NPI 1699911222 Sierra Laisy Massage Therapist · Sumner, WA NPI 1851684633 Molen Maxillofacial Surgery, Inc. Oral and Maxillofacial Surgery (Dentist) · Sumner, WA NPI 1427906890
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-22.