Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

TSZ YING TSOI
NPI 1245137678
Behavior Technician in Lynnwood, WA

Active since October 20, 2026
20818 44TH AVE W STE 190, LYNNWOOD, WA 98036(888) 515-1793 Get Directions Write a Review

NPPES record added: October 20, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Tsz Ying Tsoi NPPES

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

TSZ YING TSOI (NPI 1245137678) is an individual behavior technician in Lynnwood, Washington and active in the NPI registry since October 2026.

NPPES Registry Identity

NPI1245137678
Entity TypeIndividualFemale
Primary Taxonomy106S00000X
Provider Legal NameTSZ YING TSOI
Location Address20818 44TH AVE W STE 190Lynnwood, WA 98036-7745
Mailing Address14929 19th Ave WLynnwood, WA 98087-6010 · (206) 530-8546
Sole ProprietorNo
Enumeration DateOctober 20, 2026
NPPES CertifiedOctober 20, 2026
✔ NPI 1245137678 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyBehavior TechnicianBehavioral Health & Social Service Providers
Taxonomy Code106S00000X
Definition
The behavior technician is a paraprofessional who practices under the close, ongoing supervision of a behavior analyst or assistant behavior analyst certified by the Behavior Analyst Certification Board and/or credentialed by a state (such as through licensure). The behavior technician is primarily responsible for the implementation of components of behavior-analytic treatment plans developed by the supervisor. That may include collecting data on treatment targets and conducting certain types of behavioral assessments (e.g., stimulus preference assessments). The behavior technician does not design treatment or assessment plans or procedures but provides services as assigned by the supervisor responsible for his or her work.
20818 44TH AVE W STE 190, Lynnwood, WA 98036

Other Names 1

Professional Name (2)Sophia Tsoi

Other Providers at the Same Location NPPES 14

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

Behavior Technician
20818 44TH AVE W STE 190
LYNNWOOD, WA 98036
Behavior Technician
20818 44TH AVE W STE 190
LYNNWOOD, WA 98036
Behavior Analyst
20818 44TH AVE W STE 190
LYNNWOOD, WA 98036
Behavior Technician
20818 44TH AVE W STE 190
LYNNWOOD, WA 98036
Behavior Technician
20818 44TH AVE W STE 190
LYNNWOOD, WA 98036
Behavior Technician
20818 44TH AVE W STE 190
LYNNWOOD, WA 98036
Behavior Technician
20818 44TH AVE W STE 190
LYNNWOOD, WA 98036
Behavior Technician
20818 44TH AVE W STE 190
LYNNWOOD, WA 98036

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 Tsz Ying Tsoi's NPI number?

The NPI number for Tsz Ying Tsoi is 1245137678. It was assigned to this individual provider in the NPPES registry on October 20, 2026. The provider is also known as Sophia Tsoi.

Where is Tsz Ying Tsoi located?

Tsz Ying Tsoi practices at 20818 44th Ave W Ste 190, Lynnwood, WA 98036. The listed phone number is (888) 515-1793.

What is Tsz Ying Tsoi's specialty?

The primary specialty registered for this NPI is Behavior Technician with taxonomy code 106S00000X.

When was this NPI record last updated?

The NPPES record for Tsz Ying Tsoi was last updated on October 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.