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

Dr. Robert J Callahan, DDS

Individual provider General Practice Dentistry · NPI 1730232042

Dr. Robert J Callahan, DDS is a General Practice Dentistry in Johnstown, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2007.

Licensed in
PA
In the registry since
2007
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.

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Practice location Address checks out

100 Main St
Johnstown, PA 15901
Phone: (814) 535-8363
Fax: (814) 535-8364
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence DS017052L (PA)

Record details

NPI number1730232042
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedJanuary 19, 2007
Last updated in NPPESJuly 8, 2007
Mailing address100 Main St, Johnstown, PA 15901

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