Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Johnna Joyce Knapp, CCC-SLP

Individual provider Speech-Language Pathologist · NPI 1700399961

Johnna Joyce Knapp, CCC-SLP is a Speech-Language Pathologist in Longview, Washington. Licensed in Washington. Registered with an NPI since 2017.

Licensed in
WA
In the registry since
2017
What do these letters mean?
CCC-SLP — Certificate of Clinical Competence in Speech-Language Pathology
A speech-language pathologist certified by ASHA.

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Practice location Address checks out

2615 Lilac St
Longview, WA 98632
Phone: (360) 575-7000
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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 60798378 (WA)

Record details

NPI number1700399961
Entity typeIndividual (Type 1)
GenderFemale
Credentials CCC-SLP
Sole proprietorNo
NPI enumeratedNovember 9, 2017
Last updated in NPPESNovember 9, 2017

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