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

Prof. Thomas C Williamson, DDS

Individual provider General Practice Dentistry · NPI 1134235492

Prof. Thomas C Williamson, DDS is a General Practice Dentistry in Ottumwa, Iowa. Practices as a sole proprietor. Licensed in Iowa.

Licensed in
IA
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.

See every abbreviation used in this directory →

Practice location Address checks out

1112 N Van Buren Ave
Ottumwa, IA 52501-6416
Phone: (641) 684-6889
Fax: (641) 684-3886
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 7253 (IA)

Record details

NPI number1134235492
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedAugust 21, 2006
Last updated in NPPESJuly 8, 2007
Mailing address1112 N Van Buren Ave, Ottumwa, IA 52501-6416

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