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

William Ernst, DDS

Individual provider General Practice Dentistry · NPI 1255028072

William Ernst, DDS is a General Practice Dentistry in Sioux Falls, South Dakota. Practices as a sole proprietor. Licensed in South Dakota and Texas.

Licensed in
SD, TX
In the registry since
2023
Specialties on file
2
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

Practice location Address checks out

4930 E 57th St
Sioux Falls, SD 57108-8705
Phone: (605) 202-5333
Show map & directions

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

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence D1499 (SD)
General Practice Dentistry Taxonomy 1223G0001X · Licence 41755 (TX)

Record details

NPI number1255028072
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedApril 20, 2023
Last updated in NPPESAugust 28, 2025
Certification dateAugust 28, 2025

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