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

Dr. Katherine Walsh Sullivan, PHD, CCC-SLP

Individual provider Speech-Language Pathologist · NPI 1376720177

Dr. Katherine Walsh Sullivan, PHD, CCC-SLP is a Speech-Language Pathologist in Bethesda, Maryland. Practices as a sole proprietor. Licensed in Maryland.

Licensed in
MD
In the registry since
2008
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.
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

8901 Rockville Pike Bethesda
Bethesda, MD 20889-0001
Phone: (301) 319-2178
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 03636 (MD)

Record details

NPI number1376720177
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD , CCC-SLP
Sole proprietorYes
NPI enumeratedJanuary 24, 2008
Last updated in NPPESApril 18, 2024
Certification dateApril 18, 2024

Other providers in Bethesda