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

SIERRA DANIELLE LEEK BCBA
NPI 1871415414
Behavior Analyst in Braintree, MA

Q: What is Sierra Leek's NPI number?

The NPI number for Sierra Leek is 1871415414. It was assigned to this individual provider in the NPPES registry on July 27, 2026.

Q: What is Sierra Leek's specialty?

The primary specialty registered for this NPI is Behavior Analyst with taxonomy code 103K00000X.

Q: When was this NPI record last updated?

The NPPES record for Sierra Leek was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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 July 27, 2026

220 FORBES RD STE 1120, BRAINTREE, MA 02184(617) 322-2694 Get Directions Write a Review

NPPES record added: July 27, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Sierra Danielle Leek Bcba NPPES

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

SIERRA DANIELLE LEEK BCBA (NPI 1871415414) is an individual behavior analyst provider in Braintree, Massachusetts, licensed in Massachusetts (1-26-90020) and active in the NPI registry since July 2026.

NPPES Registry Identity

NPI1871415414

Entity TypeIndividualFemale

Primary Taxonomy103K00000X

Provider Legal NameSIERRA DANIELLE LEEKCredential: BCBA

Location Address220 FORBES RD STE 1120Braintree, MA 02184-2800

Mailing Address78 Tanager RdAttleboro, MA 02703-1723

Phone(617) 322-2694

Sole ProprietorNo

Enumeration DateJuly 27, 2026

NPPES CertifiedJuly 27, 2026

✔ NPI 1871415414 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyBehavior AnalystBehavioral Health & Social Service Providers

Taxonomy Code103K00000X

License✔ Licensed in MA · 1-26-90020

Definition

A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans.

220 FORBES RD STE 1120, Braintree, MA 02184

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Other Providers at the Same Location NPPES

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

KIELA BRIDGE MOT, OTR

Occupational Therapist

220 FORBES RD STE 1120
BRAINTREE, MA 02184

Norfolk County (617) 322-2694

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 Leek's NPI number?

The NPI number for Sierra Leek is 1871415414. It was assigned to this individual provider in the NPPES registry on July 27, 2026.

Where is Sierra Leek located?

Sierra Leek practices at 220 Forbes Rd Ste 1120, Braintree, MA 02184. The listed phone number is (617) 322-2694.

What is Sierra Leek's specialty?

The primary specialty registered for this NPI is Behavior Analyst with taxonomy code 103K00000X.

When was this NPI record last updated?

The NPPES record for Sierra Leek was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.