Orthodontics and Dentofacial Orthopedics (1223X0400X)
License number on NPI record
15615 (MA)
Authorized official
Joan Walder, DDS, Doctor
NPI first issued
Aug 31, 2006
NPI record last updated
Dec 11, 2008
NPI 1184735326 is active in the federal NPPES registry (CMS) with Orthodontics and Dentofacial Orthopedics, an ADA-recognized dental specialty, as its primary taxonomy; license 15615 (MA) is listed on the record. Source: NPPES NPI Registry (CMS) (record). Data as of 2026-09-30.
What these registry facts mean
The NPI (National Provider Identifier) is the federal ID every HIPAA-covered provider uses to bill insurance. This NPI belongs to an organization, so it may cover several clinicians at this location. The specialty is the taxonomy the provider chose when registering; NPPES does not check it. A license number here is what the provider entered — confirm it with the state board before you rely on it. Orthodontists are dentists who completed an accredited orthodontic residency after dental school. General dentists can also offer braces or aligners, but they are not listed here.
Checking credentials: the specialty shown is the one this provider registered with the NPI system. Your state dental board's license lookup confirms the license, and the American Board of Orthodontics lists board-certified orthodontists.