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

William M. Callahan, DDS, PC

Organization Dental Clinic/Center · NPI 1346473683

William M. Callahan, DDS, PC is a Dental Clinic/Center in Westminster, South Carolina. Licensed in South Carolina. Registered with an NPI since 2009.

Licensed in
SC
In the registry since
2009
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

104 W Oak Hwy
Westminster, SC 29693-2226
Phone: (864) 647-9000
Fax: (864) 647-7873
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dental Clinic/Center (primary) Taxonomy 261QD0000X · Licence 4167 (SC)

Record details

NPI number1346473683
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Debbie Smith — Office Manager · (864) 647-9000
NPI enumeratedSeptember 3, 2009
Last updated in NPPESSeptember 3, 2009
Mailing address104 W Oak Hwy, Westminster, SC 29693-2226

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