Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. David Leonard Olsen, DDS, MS

Individual provider Orthodontics and Dentofacial Orthopedics Dentistry · NPI 1205922861

Dr. David Leonard Olsen, DDS, MS is an Orthodontics and Dentofacial Orthopedics Dentistry in Appleton, Wisconsin. Practices as a sole proprietor. Licensed in Wisconsin.

Licensed in
WI
In the registry since
2006
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.
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

145 W Calumet St
Appleton, WI 54915-4934
Phone: (920) 731-2777
Fax: (920) 733-3402
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthodontics and Dentofacial Orthopedics Dentistry (primary) Taxonomy 1223X0400X · Licence 2491 (WI)

Record details

NPI number1205922861
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS , MS
Sole proprietorYes
NPI enumeratedOctober 4, 2006
Last updated in NPPESJuly 8, 2007
Mailing address145 W. Calumet St., Appleton, WI 54915-4934

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