Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Seayoon An
Pediatric Dentistry in Methuen, MA · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1851815369
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Registry record
Entity type Individual (Type 1)
Name Seayoon An
Sex Female
Practice address 413 Broadway # B, Methuen, MA, 01844
Phone (978) 258-1363
Enumeration date Jul 27, 2017
Last updated in NPPES Nov 19, 2024
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
Where does Seayoon An practice?
The practice location on file with NPPES is in Methuen, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Seayoon An?
The National Provider Identifier (NPI) for Seayoon An is 1851815369, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-19.