SIERRA DAY
NPI 1215898440
Behavior Technician in Bellingham, WA

Active since November 18, 2025
4201 MERIDIAN ST STE 113, BELLINGHAM, WA 98226(360) 305-3275 Get Directions Write a Review

NPPES record last updated: November 18, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Sierra Day NPPES

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

SIERRA DAY (NPI 1215898440) is an individual behavior technician in Bellingham, Washington, licensed in Washington (CB70059271) and active in the NPI registry since November 2025.

NPPES Registry Identity

NPI1215898440
Entity TypeIndividualFemale
Primary Taxonomy106S00000X
Provider Legal NameSIERRA DAY
Location Address4201 MERIDIAN ST STE 113Bellingham, WA 98226-5532
Mailing Address4201 Meridian St Ste 113Bellingham, WA 98226-5532 · (360) 305-3275
Sole ProprietorNo
Enumeration DateNovember 18, 2025
NPPES CertifiedNovember 18, 2025
NPI 1215898440 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyBehavior TechnicianBehavioral Health & Social Service Providers
Taxonomy Code106S00000X
License Licensed in WA · CB70059271
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.

4201 MERIDIAN ST STE 113, Bellingham, WA 98226

Other Providers at the Same Location NPPES 18

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

Behavior Technician
4201 MERIDIAN ST STE 113
BELLINGHAM, WA 98226
Behavior Technician
4201 MERIDIAN ST STE 113
BELLINGHAM, WA 98226
Behavior Analyst
4201 MERIDIAN ST STE 113
BELLINGHAM, WA 98226
Behavior Analyst
4201 MERIDIAN ST STE 113
BELLINGHAM, WA 98226
Behavior Analyst
4201 MERIDIAN ST STE 113
BELLINGHAM, WA 98226
Behavior Analyst
4201 MERIDIAN ST STE 113
BELLINGHAM, WA 98226
Nurse Practitioner (Psychiatric/Mental Health)
4201 MERIDIAN ST STE 113
BELLINGHAM, WA 98226
Behavior Technician
4201 MERIDIAN ST STE 113
BELLINGHAM, WA 98226

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 Sierra Day's NPI number?

The NPI number for Sierra Day is 1215898440. It was assigned to this individual provider in the NPPES registry on November 18, 2025.

Where is Sierra Day located?

Sierra Day practices at 4201 Meridian St Ste 113, Bellingham, WA 98226. The listed phone number is (360) 305-3275.

What is Sierra Day'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 Sierra Day was last updated on November 18, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.