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

Dr. William M Callahan, DDS

Individual provider General Practice Dentistry · NPI 1831192400

Dr. William M Callahan, DDS is a General Practice Dentistry in Seneca, South Carolina. Licensed in Georgia and South Carolina. Registered with an NPI since 2005.

Licensed in
GA, SC
In the registry since
2005
Specialties on file
2
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

11012 N Radio Station Rd
Seneca, SC 29678-1142
Phone: (648) 820-8808
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 4167 (SC)
General Practice Dentistry Taxonomy 1223G0001X · Licence GA 9232 (GA)

Record details

NPI number1831192400
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedMay 27, 2005
Last updated in NPPESFebruary 3, 2020
Certification dateFebruary 3, 2020
Mailing address11012 N Radio Station Rd, Seneca, SC 29678-1142

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