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

Dr. Thomas H Siefker, DDS

Individual provider General Practice Dentistry · NPI 1457368078

Dr. Thomas H Siefker, DDS is a General Practice Dentistry in Ottoville, Ohio. Practices as a sole proprietor. Licensed in Ohio.

Licensed in
OH
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

125 Main St
Ottoville, OH 45876-0250
Phone: (419) 453-3000
Fax: (419) 453-3001
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 30-018864 (OH)

Record details

NPI number1457368078
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedAugust 3, 2006
Last updated in NPPESJuly 8, 2007
Mailing address125 Main Street, P O Box 250, Ottoville, OH 45876-0250