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

Thessaly An H Prentiss, SLP

Individual provider Speech-Language Pathologist · NPI 1437763232

Thessaly An H Prentiss, SLP is a Speech-Language Pathologist in Mount Vernon, Washington. Licensed in Washington. Registered with an NPI since 2020.

Licensed in
WA
In the registry since
2020
What do these letters mean?
SLP — Speech-Language Pathologist
Treats speech, language and swallowing disorders.

See every abbreviation used in this directory →

Practice location Address checks out

320 Pacific Pl
Mount Vernon, WA 98273-5463
Phone: (360) 416-7570
Fax: (360) 416-7580
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 SI61087370 (WA)

Record details

NPI number1437763232
Entity typeIndividual (Type 1)
GenderFemale
Credentials SLP
Sole proprietorNo
NPI enumeratedAugust 31, 2020
Last updated in NPPESAugust 31, 2020
Certification dateAugust 31, 2020

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