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

Individual provider Speech-Language Pathologist · NPI 1215194915

Mr. Mark Lawrence Callahan, SLP is a Speech-Language Pathologist in Pittsburgh, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2008
What do these letters mean?
SLP — Speech-Language Pathologist
Treats speech, language and swallowing disorders.

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Practice location Address checks out

6000 Babcock Blvd Ste 1002
Pittsburgh, PA 15237-2564
Phone: (412) 369-5150
Fax: (412) 369-5163
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Speech-Language Pathologist (primary) Taxonomy 235Z00000X · Licence SL003238L (PA)

Record details

NPI number1215194915
Entity typeIndividual (Type 1)
GenderMale
Credentials SLP
Sole proprietorYes
NPI enumeratedMay 20, 2008
Last updated in NPPESMay 20, 2008

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