Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

TONIA OLSON
NPI 1720505704
Speech-Language Pathologist in Federal Way, WA

Q: What is Tonia Olson's NPI number?

The NPI number for Tonia Olson is 1720505704. It was assigned to this individual provider in the NPPES registry on August 29, 2017.

Q: What is Tonia Olson's specialty?

The primary specialty registered for this NPI is Speech-Language Pathologist with taxonomy code 235Z00000X.

Q: When was this NPI record last updated?

The NPPES record for Tonia Olson was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 29, 2017

33330 8TH AVE S, FEDERAL WAY, WA 98003(253) 945-2000 Get Directions Write a Review

NPPES record last updated: October 7, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 7, 2026, Aug 29, 2017 (2 updates tracked since 2017).

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About Tonia Olson NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TONIA OLSON (NPI 1720505704) is an individual speech-language pathologist provider in Federal Way, Washington and active in the NPI registry since August 2017.

NPPES Registry Identity

NPI1720505704

Entity TypeIndividualFemale

Primary Taxonomy235Z00000X

Provider Legal NameTONIA OLSON

Location Address33330 8TH AVE SFederal Way, WA 98003-6325

Mailing Address4931 Wa Tau Ga Ave NeTacoma, WA 98422-1761 · (360) 296-2399

Phone(253) 945-2000

Sole ProprietorNo

Enumeration DateAugust 29, 2017

Last NPPES UpdateOctober 7, 20262 updates tracked since enumeration

NPPES CertifiedOctober 7, 2026

✔ NPI 1720505704 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpeech-Language PathologistSpeech, Language and Hearing Service Providers

Taxonomy Code235Z00000X

Definition

The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.

33330 8TH AVE S, Federal Way, WA 98003

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BREANNA ELIZABETH SERDAHL

Speech-Language Pathologist