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

Nancy Siska, MA, MS, CCC-SLP

Individual provider Speech-Language Pathologist · NPI 1538471123

Nancy Siska, MA, MS, CCC-SLP is a Speech-Language Pathologist in Waltham, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2010.

Licensed in
MA
In the registry since
2010
What do these letters mean?
MA — Master of Arts
A graduate arts degree.
MS — Master of Science
A graduate science degree.
CCC-SLP — Certificate of Clinical Competence in Speech-Language Pathology
A speech-language pathologist certified by ASHA.

See every abbreviation used in this directory →

Practice location Address checks out

9 Hope Ave
Waltham, MA 02453-2741
Phone: (781) 216-2215
Show map & directions

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

Specialties & licences

Speech-Language Pathologist (primary) Taxonomy 235Z00000X · Licence 5075 (MA)

Record details

NPI number1538471123
Entity typeIndividual (Type 1)
GenderFemale
Credentials MA , MS , CCC-SLP
Sole proprietorNo
NPI enumeratedJuly 12, 2010
Last updated in NPPESJuly 12, 2010

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