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

Dr. Randall J. Olson, DDS

Individual provider General Practice Dentistry · NPI 1245229020

Dr. Randall J. Olson, DDS is a General Practice Dentistry in Decorah, Iowa. Licensed in Iowa. Registered with an NPI since 2005.

Licensed in
IA
In the registry since
2005
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

511 W Water St Ste C
Decorah, IA 52101-1776
Phone: (563) 382-4302
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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 7652 (IA)

Record details

NPI number1245229020
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedOctober 14, 2005
Last updated in NPPESJuly 13, 2026
Mailing address511 W Water St, Suite C, Decorah, IA 52101-1776

Other providers in Decorah