SIAN JULIA ROMERO
NPI 1528826203
Assistant Behavior Analyst in Seattle, WA

Q: What is Sian Romero's NPI number?

The NPI number for Sian Romero is 1528826203. It was assigned to this individual provider in the NPPES registry on March 7, 2024.

Q: What is Sian Romero's specialty?

The primary specialty registered for this NPI is Assistant Behavior Analyst with taxonomy code 106E00000X.

Q: When was this NPI record last updated?

The NPPES record for Sian Romero was last updated on April 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since March 07, 2024

600 STEWART ST, STE 300, SEATTLE, WA 98101(855) 832-6727 Get Directions Write a Review

NPPES record last updated: April 15, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 15, 2026, Mar 24, 2026, Aug 4, 2024 and 1 more (4 updates tracked since 2024).

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About Sian Julia Romero NPPES

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

SIAN JULIA ROMERO (NPI 1528826203) is an individual assistant behavior analyst provider in Seattle, Washington, licensed in Washington (LABA.AB.70092551) and active in the NPI registry since March 2024.

NPPES Registry Identity

NPI1528826203

Entity TypeIndividualFemale

Primary Taxonomy106E00000X

Provider Legal NameSIAN JULIA ROMERO

Location Address600 STEWART ST, STE 300Seattle, WA 98101-1257

Mailing Address7108 S Kanner HwyStuart, FL 34997-7462 · (855) 832-6727

Phone(855) 832-6727

Sole ProprietorNo

Enumeration DateMarch 7, 2024

Last NPPES UpdateApril 15, 20264 updates tracked since enumeration

NPPES CertifiedApril 15, 2026

✔ NPI 1528826203 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAssistant Behavior AnalystBehavioral Health & Social Service Providers

Taxonomy Code106E00000X

License✔ Licensed in WA · LABA.AB.70092551

Definition

An assistant behavior analyst is qualified by Behavior Analyst Certification Board certification and/or a state-issued license or credential in behavior analysis to practice under the supervision of an appropriately credentialed professional behavior analyst. An assistant behavior analyst delivers services consistent with the dimensions of applied behavior analysis and supervision requirements defined in state laws or regulations and/or national certification standards. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing behavior-analytic treatment plans, training and supervising others in implementation of components of treatment plans, and direct implementation of treatment plans.

Also ListedBehavior TechnicianTaxonomy 106S00000X

600 STEWART ST, Seattle, WA 98101

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Other Providers at the Same Location NPPES 5

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

THERAPEUTIC ASSOCIATES INC

Physical Therapist

600 STEWART ST
SEATTLE, WA 98101

King County (206) 623-4570

YU-HSING CHI

Behavior Analyst

600 STEWART ST, STE 300
SEATTLE, WA 98101

King County (855) 832-6727

MR. TRISTAN DAVID LUCIOTTI RBT

Behavior Technician

600 STEWART ST
SEATTLE, WA 98101

King County (855) 832-6727

JORDAN C STERN M D P C

Otolaryngology

600 STEWART ST, SUITE 400
SEATTLE, WA 98101

King County (212) 683-0174

CHRISTIAN BAILEY MA, LMHC, SUDP

Counselor (Mental Health)

600 STEWART ST, SUITE 400
SEATTLE, WA 98101

King County (360) 504-6605

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 Sian Romero's NPI number?

The NPI number for Sian Romero is 1528826203. It was assigned to this individual provider in the NPPES registry on March 7, 2024.

Where is Sian Romero located?

Sian Romero practices at 600 Stewart St Ste 300, Seattle, WA 98101. The listed phone number is (855) 832-6727.

What is Sian Romero's specialty?

The primary specialty registered for this NPI is Assistant Behavior Analyst with taxonomy code 106E00000X.

When was this NPI record last updated?

The NPPES record for Sian Romero was last updated on April 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.