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
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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
Mailing address203 2nd Ave Sw, Sidney, MT 59270-4019

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