Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mrs. Tonja Susann Diffner, RDH

Individual provider Dental Hygienist · NPI 1831602671

Mrs. Tonja Susann Diffner, RDH is a Dental Hygienist in Federal Way, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2017
What do these letters mean?
RDH — Registered Dental Hygienist
A licensed hygienist who cleans teeth and screens for oral disease.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

33919 9th Ave S Ste 1
Federal Way, WA 98003-6724
Phone: (206) 780-6908
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dental Hygienist (primary) Taxonomy 124Q00000X · Licence DH60140200 (WA)

Record details

NPI number1831602671
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDH
Sole proprietorYes
NPI enumeratedNovember 15, 2017
Last updated in NPPESNovember 15, 2017

Other providers in Federal Way