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

Dr. Anthony David Thiessen, DMD

Individual provider General Practice Dentistry · NPI 1093950669

Dr. Anthony David Thiessen, DMD is a General Practice Dentistry in Sidney, Montana. Licensed in Montana. Registered with an NPI since 2008.

Licensed in
MT
In the registry since
2008
What do these letters mean?
DMD — Doctor of Dental Medicine
A dentist. Identical training and licensing to a DDS.

See every abbreviation used in this directory →

Practice location Address checks out

203 2nd Ave SW
Sidney, MT 59270-4019
Phone: (406) 433-7645
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 1958 (MT)

Record details

NPI number1093950669
Entity typeIndividual (Type 1)
GenderMale
Credentials DMD
Sole proprietorNo
NPI enumeratedDecember 10, 2008
Last updated in NPPESDecember 10, 2008

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