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TABITHA S KNOWLTON
NPI 1902763477
Speech-Language Pathologist in Issaquah, WA

Active since January 07, 2026
5150 220TH AVE SE, ISSAQUAH, WA 98029(425) 837-7000 Get Directions Write a Review

NPPES record last updated: January 14, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 14, 2026, Jan 7, 2026 (2 updates tracked since 2026).

About Tabitha S Knowlton NPPES

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

TABITHA S KNOWLTON (NPI 1902763477) is an individual speech-language pathologist provider in Issaquah, Washington, licensed in Washington (LL61581740) and active in the NPI registry since January 2026.

NPPES Registry Identity

NPI1902763477
Entity TypeIndividualFemale
Primary Taxonomy235Z00000X
Provider Legal NameTABITHA S KNOWLTON
Location Address5150 220TH AVE SEIssaquah, WA 98029-6834
Mailing Address16649 Se 69th WayBellevue, WA 98006-5675 · (425) 495-4118 · Fax (425) 495-4118
Phone(425) 837-7000
Sole ProprietorNo
Enumeration DateJanuary 7, 2026
Last NPPES UpdateJanuary 14, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 14, 2026
✔ NPI 1902763477 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
License✔ Licensed in WA · LL61581740
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.
5150 220TH AVE SE, Issaquah, WA 98029
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Other Providers at the Same Location NPPES 8

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

REBECCA KNEEPKENS
Speech-Language Pathologist
5150 220TH AVE SE
ISSAQUAH, WA 98029
King County (425) 837-6500
CARISSA ANDERSON PT, DPT
Physical Therapist
5150 220TH AVE SE
ISSAQUAH, WA 98029
King County (603) 738-9638
IRENE ABIGAIL RAGAN MS, CCC-SLP
Speech-Language Pathologist
5150 220TH AVE SE
ISSAQUAH, WA 98029
King County (425) 837-7000
ANDREA V QUINTANARES COTA/L
Occupational Therapy Assistant
5150 220TH AVE SE
ISSAQUAH, WA 98029
King County (425) 837-7000
SHWETHA ANAND M.S., SLP
Speech-Language Pathologist
5150 220TH AVE SE
ISSAQUAH, WA 98029
King County (425) 837-7085
TRISTA STEELE
Speech-Language Pathologist
5150 220TH AVE SE
ISSAQUAH, WA 98029
King County (425) 837-7000
NICOLE WU
Speech-Language Pathologist
5150 220TH AVE SE
ISSAQUAH, WA 98029
King County (425) 837-7102
DR. JOSEPH JOHN MORGAN DPT
Physical Therapist
5150 220TH AVE SE
ISSAQUAH, WA 98029
King County (425) 837-7000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tabitha Knowlton's NPI number?

The NPI number for Tabitha Knowlton is 1902763477. It was assigned to this individual provider in the NPPES registry on January 7, 2026.

Where is Tabitha Knowlton located?

Tabitha Knowlton practices at 5150 220th Ave SE, Issaquah, WA 98029. The listed phone number is (425) 837-7000.

What is Tabitha Knowlton's specialty?

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

When was this NPI record last updated?

The NPPES record for Tabitha Knowlton was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.